JJC CPFP|7001011|091214|14236|93A288S4

Iowa Department of Natural Resources

Air Quality Construction Permit

Permit Holder

Firm: Muscatine Power and Water

Contact: Responsible Party:

Mary Jean Brewster Mary Jean Brewster

Mgr. Env. Affairs Mgr. Env. Affairs

(563) 262-3259

3205 Cedar St., PO Box 899

Muscatine, IA 52761

Permitted Equipment

Emission Unit(s): Rail Unloading System – Unit 9 (See Condition 11)

Control Equipment: Fabric Filter Baghouse (CE21)

Dust Suppression System (CE24A)

Emission Point: EP21 (vents inside)

Equipment Location: 1700 Dick Drake Way

Muscatine, IA 52761

Plant Number: 70-01-011

Issuance of this permit shall not relieve the owner or operator of the responsibility to comply fully with 

applicable provisions of the State Implementation Plan (SIP), and any other requirements of local, state, 

and federal law.

Permit No. Proj. No. Description Date Stack 

Testing

93-A-288-S4 14-236 Modify PM2.5 limit 09/12/14 No

____________________________________

Under the Direction of the Director of

the Department of Natural Resources
Muscatine Power and Water Rail Unloading System, Unit 9 (EP21) Page 2 of 10

Muscatine, Iowa 93-A-288-S4

PERMIT CONDITIONS

1. Departmental Review

This permit is issued based on information submitted by the applicant. Any misinformation, false statements or 

misrepresentations by the applicant or by the applicant’s representative(s) shall cause this permit to be void. In 

addition, the applicant may be subject to criminal penalties according to Iowa Code Section 455B.146A.

This permit is issued under the authority of 567 Iowa Administrative Code (IAC) 22.3. The proposed equipment has 

been evaluated for conformance with Iowa Code Chapter 455B; 567 IAC Chapters 20 – 35; and 40 Code of Federal 

Regulations (CFR) Parts 51, 52, 60, 61, and 63 and has the potential to comply.

No review has been undertaken on the engineering aspects of the equipment or control equipment other than the 

potential of that equipment for reducing air contaminant emissions. The Department assumes no liability, directly or 

indirectly, for any loss due to damage to persons or property caused by, resulting from, or arising out of the design, 

installation, maintenance or operation of the proposed equipment.

2. Owner and Operator Responsibility

This permit is for the construction and operation of specific emission unit(s), control equipment, and emission point 

as described in this permit and in the application for this permit. The permit holder, owner, and operator of the 

facility shall assure that the installation of the equipment listed in this permit conforms to the design in the 

application (i.e. type, maximum rated capacity, etc.). No person shall construct, install, reconstruct or alter this 

emission unit(s), control equipment, or emission point without the required amended permit.

Any owner or operator of the specified emission unit(s), control equipment, or emission point, including any person 

who becomes an owner or operator subsequent to the date on which this permit is issued, is responsible for assuring 

that the installation, operation, and maintenance of the equipment listed in this permit is in compliance with the 

provisions of this permit and all other applicable requirements.

The owner or operator of any emission unit or control equipment shall maintain and operate the equipment and 

control equipment at all times in a manner consistent with good practice for minimizing emissions, as required by 

paragraph 567 IAC 24.2(1) "Maintenance and Repair”.

3. Transferability

As limited by 567 IAC 22.3(3)”f”, this permit is not transferable from one location to another or from one piece of 

equipment to another, unless the equipment is portable. When portable equipment for which a permit has been 

issued is to be transferred from one location to another, the Department shall be notified in writing at least seven (7) 

days prior to transferring to the new location unless the equipment will be located in an area which is classified as 

nonattainment for the National Ambient Air Quality Standards (NAAQS) or is a maintenance area for the NAAQS

in which case notification shall be given fourteen (14) days prior to the relocation of equipment1(See Permit 

Condition 8.A.2). The owner or operator will be notified at least ten (10) days prior to the scheduled relocation if 

the relocation will cause a violation of the (NAAQS). In such case, a supplemental permit shall be required prior to 

the initiation of construction of additional control equipment or modifications to equipment needed to meet the 

standards.

1 A list of nonattainment areas and maintenance areas for the NAAQS can be obtained from the Department.

4. Construction

A. General Requirements

It is the owner's responsibility to ensure that construction conforms to the final plans and specifications as 

submitted, and that adequate operation and maintenance is provided to ensure that no condition of air 

pollution is created. 
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Muscatine, Iowa 93-A-288-S4

4. Construction (Continued)

In permit amendments, all provisions of the original permit remain in full force and effect unless they are 

specifically changed by the permit amendment. If a proposed project is not timely completed, the owner or 

operator shall seek a permit amendment in order to revert back to the most recent previous version of the 

permit. The previous, unchanged permit provisions are included in the amendment for your convenience

only and are unappealable.

This permit or amendment shall become void if any one of the following conditions occurs:

(1) the construction or implementation of the proposed project, as it affects the emission point permitted 

herein, is not initiated within eighteen (18) months after the permit issuance date; or

(2) the construction or implementation of the proposed project, as it affects the emission point permitted 

herein, is not completed within thirty-six (36) months after the permit issuance date; or

(3) the construction or implementation of the proposed project, as it affects the emission point permitted 

herein, is not completed within a time period specified elsewhere in this permit.

B. Changes to Plans and Specifications

The owner or operator shall amend this permit or amendment prior to startup of the equipment if:

(1) Any changes are made to the final plans and specifications submitted for the proposed project; or

(2) This permit becomes void.

Changes to the final plans and specification shall include changes to plans and specifications for permitted 

equipment and control equipment and the specified operation thereof.

C. Amended Permits

The owner or operator may continue to act under the provisions of the previous permit for the affected 

emission unit(s) and emission point, together with any previous amendment to the permit, until one of the 

following conditions occurs:

(1) The proposed project authorized by this amendment is completed as it affects the emission unit(s) and 

emission point permitted herein; or

(2) This current amendment becomes void.

5. Credible Evidence

As stated in 567 IAC 21.5 and also in 40 CFR Part §60.11(g), where applicable, any credible evidence may be used 

for the purpose of establishing whether a person has violated or is in violation of any provisions specified in this 

permit or any provisions of 567 IAC Chapters 20 through 35.

6. Excess Emissions

Per 567 IAC 24.1(1), excess emissions during a period of startup, shutdown, or cleaning of control equipment are 

not a violation of the emission standard if it is accomplished expeditiously and in a manner consistent with good 

practice for minimizing emissions except when another regulation applicable to the unit or process provides 

otherwise. Cleaning of control equipment, which does not require the shutdown of process equipment, shall be 

limited to one (1) six-minute period per one (1) hour period. 

An incident of excess emissions other than the above is a violation and may be subject to criminal penalties 

according to Iowa Code 455B.146A. If excess emissions are occurring, either the control equipment causing the 

excess shall be repaired in an expeditious manner, or the process generating the emissions shall be shutdown within 

a reasonable period of time, as specified in 567 IAC 24.1. 

An incident of excess emissions shall be orally reported by telephone, electronic mail or in person to the appropriate

field office within eight (8) hours of, or at the start of, the first working day following the onset of the incident (See 

Permit Condition 8.B.1). A written report of an incident of excess emissions shall be submitted as a follow-up to all 

required initial reports within seven (7) days of the onset of the upset condition (See Permit Condition 8.B.2).
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Muscatine, Iowa 93-A-288-S4

7. Permit Violations

Knowingly committing a violation of this permit may carry a criminal penalty of up to $10,000 per day fine and two 

(2) years in jail according to Iowa Code Section 455B.146A.

8. Notification, Reporting, and Recordkeeping

A. The owner or operator shall furnish the Department the following written notifications:

(1) Per 567 IAC 22.3(3)”b”:

(a) The date construction, installation, or alteration is initiated postmarked within thirty (30) days 

following initiation of construction, installation, or alteration;

(b) The actual date of startup, postmarked within fifteen (15) days following the start of operation;

(2) Per 567 IAC 22.3(3)”f”, when portable equipment for which a permit has been issued is to be 

transferred from one location to another, the Department shall be notified:

(a) at least fourteen (14) days before equipment relocation if the equipment will be located in a 

nonattainment area for the National Ambient Air Quality Standards (NAAQS) or a maintenance 

area for the NAAQS; 

(b) at least seven (7) days before equipment relocation.

(3) Per 567 IAC 22.3(8), a new owner shall notify the Department of the transfer of equipment ownership

within thirty (30) days of the occurrence. The notification shall be mailed to:

Air Quality Bureau

Iowa Department of Natural Resources

7900 Hickman Road, Suite 1

Windsor Heights, IA 50324

and include the following information:

 The date of ownership change,

 The name, address, and telephone number of the responsible official, the contact person, and the 

owner of the equipment both before and after the ownership change; and

 The construction permit number(s) of the equipment changing ownership.

(4) Unless specified per a federal regulation, notification of each compliance test required by Permit 

Condition 12 shall be done not less than thirty (30) days before the required test or performance 

evaluation of a continuous emission monitor [567 IAC 25.1(7)]. The notification shall include:

 the time, 

 the place, 

 the name of the person who will conduct the tests, 

 and other information as required by the Department;

If the owner or operator does not provide timely notice to the Department, the Department shall not 

consider the test results or performance evaluation results to be a valid demonstration of compliance 

with the applicable rules or permit conditions. Upon written request, the Department may allow a 

notification period of less than thirty (30) days.

B. The owner or operator shall furnish the Department with the following reports:

(1) Per 567 IAC 24.1(2), an incident of excess emissions as defined in 567 IAC 20.2 shall be reported 

within eight (8) hours or at the start of the first working day following the onset of the incident. The 

report may be made by electronic mail, in person or by telephone.

(2) Per 567 IAC 24.1(3), a written report of an incident of excess emissions as defined in 567 IAC 20.2

shall be submitted as a follow-up to all required initial reports to the Department within seven (7) days 

of the onset of the upset condition.

(3) Operation of this emission unit(s) or control equipment outside of those operating parameters specified 

in Permit Condition 14 in accordance to the schedule set forth in 567 IAC 24.1.

(4) Per 567 IAC 25.1(6), the owner or operator of any facility required to install a continuous monitoring 

system or systems shall provide quarterly reports to the Director, no later than thirty (30) calendar days 

following the end of the calendar quarter, on forms provided by the Director.
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Muscatine, Iowa 93-A-288-S4

8. Notification, Reporting, and Recordkeeping (Continued)

(5) Per 567 IAC 25.1(7), a written compliance demonstration report for each compliance testing event, 

whether successful or not, postmarked not later than six (6) weeks after the completion of the test 

period unless other regulations provide for other notification requirements. In that case, the more 

stringent reporting requirement shall be met;

C. All data, records, reports, documentation, construction plans, and calculations required under this permit 

shall be available at the plant during normal business hours for inspection and copying by federal, state, or 

local air pollution regulatory agencies and their authorized representatives, for a minimum of two (2) years 

from the date of recording unless otherwise required by another applicable law (i.e. NSPS, NESHAP, etc.)

D. The owner or operator shall send correspondence regarding this permit to the following address:

Construction Permit Supervisor

Air Quality Bureau

Iowa Department of Natural Resources

7900 Hickman Road, Suite 1

Windsor Heights, IA 50324

Telephone: (515) 725-9549

Fax: (515) 725-9501

E. The owner or operator shall send correspondence concerning stack testing to:

Stack Testing Coordinator

Air Quality Bureau

Iowa Department of Natural Resources

7900 Hickman Road, Suite 1

Windsor Heights, IA 50324

Telephone: (515) 725-9545

Fax: (515) 725-9502

F. The owner or operator shall send reports and notifications to:

Compliance Unit Supervisor

Air Quality Bureau

Iowa Department of Natural Resources

7900 Hickman Road, Suite 1

Windsor Heights, IA 50324

Telephone: (515) 725-9550

Fax: (515) 725-9502

Iowa DNR Field Office 6

1023 West Madison

Washington, IA 52353

Telephone: (319) 653-2135

Fax: (319) 653-2856

9. Appeal Rights

All conditions within an original permit may be appealed, subject to the appeal rights set forth in 561 IAC Chapter 

7. Amended conditions within a permit amendment may be appealed, subject to the appeal rights set forth in 561 

IAC Chapter 7. In permit amendments, all provisions of the original permit remain in full force and effect unless 

they are specifically changed by the permit amendment. The previous, unchanged permit provisions are included in 

the amendment for your convenience only and are unappealable.

Per 561 IAC 7.4(1), the owner or operator shall file any written notice of appeal within thirty (30) days of receipt of 

the issued permit. The written notice of appeal shall be filed with the Director of the Department with a copy to the 

Legal Services Bureau Chief at the following addresses:

Director

Iowa Department of Natural Resources

502 East 9th Street

Des Moines, IA 50319

Bureau Chief

Legal Services Bureau

Iowa Department of Natural Resources

502 East 9th Street

Des Moines, IA 50319
Muscatine Power and Water Rail Unloading System, Unit 9 (EP21) Page 6 of 10

Muscatine, Iowa 93-A-288-S4

10. Emission Limits

The following emission limits shall not be exceeded: 

Pollutant lb/hr1tons/yr2 Additional 

Limits

Reference

(567 IAC)

Particulate Matter (PM) – Federal NA NA NA NA

Particulate Matter (PM) – State 0.86 0.56 0.01 gr/dscf Requested limits

PM10 0.8630.56 NA NAAQS

PM2.5 0.0364 NA NA NAAQS

Opacity NA NA 20%523.1(2)”v”5

Sulfur Dioxide (SO2) NA NA NA NA

Nitrogen Oxides (NOx) NA NA NA NA

Volatile Organic Compounds (VOC) NA NA NA NA

Carbon Monoxide (CO) NA NA NA NA

Lead (Pb) NA NA NA NA

Carbon Dioxide equivalents (CO2e) NA NA NA NA

(Single HAP) NA NA NA NA

(Total HAP) NA NA NA NA

1 The emission limit is expressed as the average of three (3) runs.

2 The emission limit is a twelve (12) month rolling total.

3 The limit for PM10 emissions is established for air dispersion modeling.

4The limit for PM2.5 emissions is established to address the “Finding of Substantial Inadequacy of Implementation Plan; Call 

for Iowa SIP Revision” for PM2.5 published in the Federal Register (76 FR 9706) on February 22, 2011.

5 NSPS Subpart Y. The emission limit is a six (6) minute average.

11. Emission Point Characteristics

This emission point shall conform to the specifications listed below:

Parameter Value

Stack Height, (ft, from the ground) 25.6 Ft.

Discharge Style Horizontal 1

Stack Opening (inches) 420 inches x 360 inches

Exhaust Temperature (F) Ambient

Exhaust Flowrate (scfm) 35,693 scfm

1 The baghouse vents inside a building. For dispersion modeling, emissions are assumed to be discharged from the building in a horizontal 

manner. 

The temperature and flowrate are intended to be representative and characteristic of the design of the permitted 

emission point. The Department recognizes that the temperature and flow rate may vary with changes in the process 

and ambient conditions. If it is determined that either the temperature or flowrate above are different than the values 

stated, the owner or operator shall submit a request to the Department within thirty (30) days of the discovery to 

determine if a permit amendment is required or submit a permit application requesting to amend the permit.

This emission point, EP 21, along with its control equipment, is connected to the following emissions units: 

Emission Unit Description Maximum Capacity

Rail Hoppers A, B & C (EU20) 1400 tons/hr

Feeder Belt-A (EU21) 700 tons/hr

Feeder Belt-B (EU22) 700 tons/hr

Transfer Conveyor Load (EU23) 1400 tons/hr
Muscatine Power and Water Rail Unloading System, Unit 9 (EP21) Page 7 of 10

Muscatine, Iowa 93-A-288-S4

12. Compliance Demonstration(s) 

Pollutant Compliance 

Demonstration

Compliance Methodology Frequency

PM – Federal No NA NA

PM – State No NA NA

PM10 No NA NA

PM2.5 No NA NA

Opacity No NA NA

SO2 No NA NA

NOx No NA NA

VOC No NA NA

CO No NA NA

Pb No NA NA

CO2 No NA NA

CH4 No NA NA

N2O No NA NA

CO2e No NA NA

HAP No NA NA

If an initial compliance demonstration specified above is testing, the owner or the owner’s authorized agent shall 

verify compliance with the emission limitations contained in Permit Condition 10 within sixty (60) days after 

achieving maximum production rate and no later than one hundred eighty (180) days after the initial startup date of 

the proposed equipment. 

If subsequent testing is specified above, the owner or the owner’s authorized agent shall verify compliance with 

the emission limitations contained in Permit Condition 10 according to the frequency and timeframe noted above.

If testing is required, the owner or the owner’s authorized agent shall use the test method and run time listed in the 

table below unless another testing methodology is approved by the Department prior to testing.

Pollutant Test Run Time Test Method

PM – Federal 1 hour 40 CFR 60, Appendix A, Method 5

PM – State 1 hour 40 CFR 60, Appendix A, Method 5 

40 CFR 51 Appendix M Method 202

PM10 1 hour 40 CFR 51, Appendix M, 201A with 202

PM2.5 1 hour 40 CFR 51, Appendix M, 201A with 202

Opacity 1 hour 40 CFR 60, Appendix A, Method 9

SO2 1 hour 40 CFR 60, Appendix A, Method 6C

NOx 1 hour 40 CFR 60, Appendix A, Method 7E

VOC 1 hour 40 CFR 60, Appendix A, Method 25A

CO 1 hour 40 CFR 60, Appendix A, Method 10

Pb 1 hour 40 CFR 60, Appendix A, Method 12

CO2 1 hour 40 CFR 60, Appendix A, Method 3

CH4 1 hour 40 CFR 60, Appendix A, Method 18

N2O 1 hour 40 CFR 60, Appendix A, Method 320

HAP 1 hour 40 CFR 60, Appendix A, Method 18

Each emissions compliance test must be approved by the Department. Unless otherwise specified by the 

Department, each test shall consist of three (3) separate runs. The arithmetic mean of three (3) acceptable test runs 

shall apply for compliance, unless otherwise indicated by the Department. 
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Muscatine, Iowa 93-A-288-S4

12. Compliance Demonstration(s) (Continued)

Per 567 IAC 25.1(7)”a”, at the Department’s request, a pretest meeting shall be held not later than fifteen (15) days 

before the owner or operator conducts the compliance demonstration. A testing protocol shall be submitted to the 

Department no later than fifteen (15) days before the owner or operator conducts the compliance demonstration. 

Representatives from the Department shall attend this meeting, along with the owner and the testing firm, if any. It 

shall be the responsibility of the owner to coordinate and schedule the pretest meeting. A representative of the 

Department shall be allowed to witness the test(s). The Department shall reserve the right to impose additional, 

different, or more detailed testing requirements.

The owner shall be responsible for the installation and maintenance of test ports. The unit(s) being sampled shall be 

operated in a normal manner at its maximum continuous output as rated by the equipment manufacturer, or the rate 

specified by the owner as the maximum production rate at which this unit(s) will be operated. In cases where 

compliance is to be demonstrated at less than the maximum continuous output as rated by the manufacturer, and it is 

the owner's intent to limit the capacity to that rating, the owner may submit evidence to the Department that this 

unit(s) has been physically altered so that capacity cannot be exceeded, or the Department may require additional 

testing, continuous monitoring, reports of operating levels, or any other information deemed necessary by the 

Department to determine whether this unit(s) is in compliance.

13. New Source Performance Standards (NSPS) and 

National Emission Standards for Hazardous Air Pollutants (NESHAP) Applicability

These emission units are subject to the requirements of 40 CFR Part 60, Subpart Y, “Standards of Performance for 

Coal Preparation Plants.” (IAC 23.1(2)”v”) and General Provisions, Subpart A. 

These emission units are not subject to a National Emission Standards for Hazardous Air Pollutants 

(NESHAP) as there are no subparts for this source category.

14. Operating Limits

Operating limits for this emission unit shall be:

A. This emissions unit shall not operate more than 1295 hours in any rolling twelve-month period. 

B. The differential pressure drop across the baghouse shall be maintained between 2 and 10 inches water 

column while the equipment is in operation.

C. The owner or operator shall develop and maintain an operating and maintenance plan for the baghouse 

including a preventative maintenance schedule that is consistent with the manufacturer's instructions for 

routine and long-term maintenance.

15. Operating Condition Monitoring and Recordkeeping

Unless specified by a federal regulation, all records as required by this permit shall be kept on-site for a minimum of 

two (2) years and shall be available for inspection by the Department. Records shall be legible and maintained in an 

orderly manner. These records shall show the following:

A. The owner or operator shall maintain the following monthly records: 

i. the number of hours that the emissions unit operated; and

ii. the rolling twelve-month total number of hours that the emissions unit operated. 
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Muscatine, Iowa 93-A-288-S4

B. The owner or operator shall properly operate and maintain equipment to periodically monitor the 

differential pressure drop across the baghouse. The monitoring devices and any recorders shall be installed, 

calibrated, operated and maintained in accordance with the manufacturer’s recommendations, instructions 

and operating manuals or per written facility specific operation and maintenance plan.

C. The owner or operator shall collect and record the pressure drop across the baghouse, in inches of water, at 

least once per day. This requirement shall not apply on the days that the equipment is not in operation.

D. The owner or operator shall maintain a record of all inspections and maintenance and any action resulting 

from the inspection and maintenance of the baghouse.

16. Continuous Emission Monitoring

Continuous emission monitoring is not required by this permit at this time.

17. Permit History

Permit No. Proj. No. Description Date Stack 

Testing

93-A-288 93-044 Original Permit 7/28/93 Yes

93-A-288-S1 95-156 Limit hours of operation based on testing 7/15/95 No

93-A-288-S2 06-015 Replace Dust Suppression System 2/2/06 Yes

93-A-288-S3 12-290 Add PM2.5 emission limit 07/22/13 Yes

18. Description of Terms and Acronyms

The descriptions below are meant only as a brief explanation of terms contained within the permit and may not be 

the exact definition of the term or acronym as contained within the regulations.

acfm Actual cubic feet per minute

Applicant The owner, company official or authorized agent

Btu British thermal unit

C Degrees Celsius

Condensable PM Material that condenses and/or reacts upon cooling and dilution in the ambient air to form 

particulate matter immediately after discharge from the stack

CO2e Carbon dioxide equivalent which is the aggregate emissions of greenhouse gas (GHG)

emissions based on global warming potentials

Department Iowa Department of Natural Resources

dia. Diameter

F Degrees Fahrenheit

ft Foot

GHG Greenhouse Gas which is defined as being the group of carbon dioxide (CO2), methane 

(CH4), nitrous oxide (N2O), hydrofluorocarbons (HFC), perfluorocarbons (PFC) and 

sulfur hexafluoride (SF6)

g grams

g/dscm Grams per dry standard cubic meter

gr Grains

gr/dscf Grains per dry standard cubic foot

gr/scf Grains per standard cubic foot

HAP Hazardous Air Pollutant(s)

hp horsepower
JJC CPFP|7001011|091214|14236|93A289S4

Iowa Department of Natural Resources

Air Quality Construction Permit

Permit Holder

Firm: Muscatine Power and Water

Contact: Responsible Party:

Mary Jean Brewster Mary Jean Brewster

Mgr. Env. Affairs Mgr. Env. Affairs

(563) 262-3259

3205 Cedar St., PO Box 899

Muscatine, IA 52761

Permitted Equipment

Emission Unit(s): Rail Unloading System – Unit 9 (See Condition 11)

Control Equipment: Fabric Filter Baghouse (CE22)

Dust Suppression System (CE24A)

Emission Point: EP22 (vents inside)

Equipment Location: 1700 Dick Drake Way

Muscatine, IA 52761

Plant Number: 70-01-011

Issuance of this permit shall not relieve the owner or operator of the responsibility to comply fully with 

applicable provisions of the State Implementation Plan (SIP), and any other requirements of local, state, 

and federal law.

Permit No. Proj. No. Description Date Stack 

Testing

93-A-289-S4 14-236 Modify PM2.5 limit 09/12/14 No

____________________________________

Under the Direction of the Director of

the Department of Natural Resources
Muscatine Power and Water Rail Unloading System, Unit 9 (EP22) Page 2 of 10

Muscatine, Iowa 93-A-289-S4

PERMIT CONDITIONS

1. Departmental Review

This permit is issued based on information submitted by the applicant. Any misinformation, false statements or 

misrepresentations by the applicant or by the applicant’s representative(s) shall cause this permit to be void. In 

addition, the applicant may be subject to criminal penalties according to Iowa Code Section 455B.146A.

This permit is issued under the authority of 567 Iowa Administrative Code (IAC) 22.3. The proposed equipment has 

been evaluated for conformance with Iowa Code Chapter 455B; 567 IAC Chapters 20 – 35; and 40 Code of Federal 

Regulations (CFR) Parts 51, 52, 60, 61, and 63 and has the potential to comply.

No review has been undertaken on the engineering aspects of the equipment or control equipment other than the 

potential of that equipment for reducing air contaminant emissions. The Department assumes no liability, directly or 

indirectly, for any loss due to damage to persons or property caused by, resulting from, or arising out of the design, 

installation, maintenance or operation of the proposed equipment.

2. Owner and Operator Responsibility

This permit is for the construction and operation of specific emission unit(s), control equipment, and emission point 

as described in this permit and in the application for this permit. The permit holder, owner, and operator of the 

facility shall assure that the installation of the equipment listed in this permit conforms to the design in the 

application (i.e. type, maximum rated capacity, etc.). No person shall construct, install, reconstruct or alter this 

emission unit(s), control equipment, or emission point without the required amended permit.

Any owner or operator of the specified emission unit(s), control equipment, or emission point, including any person 

who becomes an owner or operator subsequent to the date on which this permit is issued, is responsible for assuring 

that the installation, operation, and maintenance of the equipment listed in this permit is in compliance with the 

provisions of this permit and all other applicable requirements.

The owner or operator of any emission unit or control equipment shall maintain and operate the equipment and 

control equipment at all times in a manner consistent with good practice for minimizing emissions, as required by 

paragraph 567 IAC 24.2(1) "Maintenance and Repair”.

3. Transferability

As limited by 567 IAC 22.3(3)”f”, this permit is not transferable from one location to another or from one piece of 

equipment to another, unless the equipment is portable. When portable equipment for which a permit has been 

issued is to be transferred from one location to another, the Department shall be notified in writing at least seven (7) 

days prior to transferring to the new location unless the equipment will be located in an area which is classified as 

nonattainment for the National Ambient Air Quality Standards (NAAQS) or is a maintenance area for the NAAQS

in which case notification shall be given fourteen (14) days prior to the relocation of equipment1(See Permit 

Condition 8.A.2). The owner or operator will be notified at least ten (10) days prior to the scheduled relocation if 

the relocation will cause a violation of the (NAAQS). In such case, a supplemental permit shall be required prior to 

the initiation of construction of additional control equipment or modifications to equipment needed to meet the 

standards.

1 A list of nonattainment areas and maintenance areas for the NAAQS can be obtained from the Department.

4. Construction

A. General Requirements

It is the owner's responsibility to ensure that construction conforms to the final plans and specifications as 

submitted, and that adequate operation and maintenance is provided to ensure that no condition of air 

pollution is created. 
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4. Construction (Continued)

In permit amendments, all provisions of the original permit remain in full force and effect unless they are 

specifically changed by the permit amendment. If a proposed project is not timely completed, the owner or 

operator shall seek a permit amendment in order to revert back to the most recent previous version of the 

permit. The previous, unchanged permit provisions are included in the amendment for your convenience

only and are unappealable.

This permit or amendment shall become void if any one of the following conditions occurs:

(1) the construction or implementation of the proposed project, as it affects the emission point permitted 

herein, is not initiated within eighteen (18) months after the permit issuance date; or

(2) the construction or implementation of the proposed project, as it affects the emission point permitted 

herein, is not completed within thirty-six (36) months after the permit issuance date; or

(3) the construction or implementation of the proposed project, as it affects the emission point permitted 

herein, is not completed within a time period specified elsewhere in this permit.

B. Changes to Plans and Specifications

The owner or operator shall amend this permit or amendment prior to startup of the equipment if:

(1) Any changes are made to the final plans and specifications submitted for the proposed project; or

(2) This permit becomes void.

Changes to the final plans and specification shall include changes to plans and specifications for permitted 

equipment and control equipment and the specified operation thereof.

C. Amended Permits

The owner or operator may continue to act under the provisions of the previous permit for the affected 

emission unit(s) and emission point, together with any previous amendment to the permit, until one of the 

following conditions occurs:

(1) The proposed project authorized by this amendment is completed as it affects the emission unit(s) and 

emission point permitted herein; or

(2) This current amendment becomes void.

5. Credible Evidence

As stated in 567 IAC 21.5 and also in 40 CFR Part §60.11(g), where applicable, any credible evidence may be used 

for the purpose of establishing whether a person has violated or is in violation of any provisions specified in this 

permit or any provisions of 567 IAC Chapters 20 through 35.

6. Excess Emissions

Per 567 IAC 24.1(1), excess emissions during a period of startup, shutdown, or cleaning of control equipment are 

not a violation of the emission standard if it is accomplished expeditiously and in a manner consistent with good 

practice for minimizing emissions except when another regulation applicable to the unit or process provides 

otherwise. Cleaning of control equipment, which does not require the shutdown of process equipment, shall be 

limited to one (1) six-minute period per one (1) hour period. 

An incident of excess emissions other than the above is a violation and may be subject to criminal penalties 

according to Iowa Code 455B.146A. If excess emissions are occurring, either the control equipment causing the 

excess shall be repaired in an expeditious manner, or the process generating the emissions shall be shutdown within 

a reasonable period of time, as specified in 567 IAC 24.1. 

An incident of excess emissions shall be orally reported by telephone, electronic mail or in person to the appropriate

field office within eight (8) hours of, or at the start of, the first working day following the onset of the incident (See 

Permit Condition 8.B.1). A written report of an incident of excess emissions shall be submitted as a follow-up to all 

required initial reports within seven (7) days of the onset of the upset condition (See Permit Condition 8.B.2).
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7. Permit Violations

Knowingly committing a violation of this permit may carry a criminal penalty of up to $10,000 per day fine and two 

(2) years in jail according to Iowa Code Section 455B.146A.

8. Notification, Reporting, and Recordkeeping

A. The owner or operator shall furnish the Department the following written notifications:

(1) Per 567 IAC 22.3(3)”b”:

(a) The date construction, installation, or alteration is initiated postmarked within thirty (30) days 

following initiation of construction, installation, or alteration;

(b) The actual date of startup, postmarked within fifteen (15) days following the start of operation;

(2) Per 567 IAC 22.3(3)”f”, when portable equipment for which a permit has been issued is to be 

transferred from one location to another, the Department shall be notified:

(a) at least fourteen (14) days before equipment relocation if the equipment will be located in a 

nonattainment area for the National Ambient Air Quality Standards (NAAQS) or a maintenance 

area for the NAAQS; 

(b) at least seven (7) days before equipment relocation.

(3) Per 567 IAC 22.3(8), a new owner shall notify the Department of the transfer of equipment ownership

within thirty (30) days of the occurrence. The notification shall be mailed to:

Air Quality Bureau

Iowa Department of Natural Resources

7900 Hickman Road, Suite 1

Windsor Heights, IA 50324

and include the following information:

 The date of ownership change,

 The name, address, and telephone number of the responsible official, the contact person, and the 

owner of the equipment both before and after the ownership change; and

 The construction permit number(s) of the equipment changing ownership.

(4) Unless specified per a federal regulation, notification of each compliance test required by Permit 

Condition 12 shall be done not less than thirty (30) days before the required test or performance 

evaluation of a continuous emission monitor [567 IAC 25.1(7)]. The notification shall include:

 the time, 

 the place, 

 the name of the person who will conduct the tests, 

 and other information as required by the Department;

If the owner or operator does not provide timely notice to the Department, the Department shall not 

consider the test results or performance evaluation results to be a valid demonstration of compliance 

with the applicable rules or permit conditions. Upon written request, the Department may allow a 

notification period of less than thirty (30) days.

B. The owner or operator shall furnish the Department with the following reports:

(1) Per 567 IAC 24.1(2), an incident of excess emissions as defined in 567 IAC 20.2 shall be reported 

within eight (8) hours or at the start of the first working day following the onset of the incident. The 

report may be made by electronic mail, in person or by telephone.

(2) Per 567 IAC 24.1(3), a written report of an incident of excess emissions as defined in 567 IAC 20.2

shall be submitted as a follow-up to all required initial reports to the Department within seven (7) days 

of the onset of the upset condition.

(3) Operation of this emission unit(s) or control equipment outside of those operating parameters specified 

in Permit Condition 14 in accordance to the schedule set forth in 567 IAC 24.1.

(4) Per 567 IAC 25.1(6), the owner or operator of any facility required to install a continuous monitoring 

system or systems shall provide quarterly reports to the Director, no later than thirty (30) calendar days 

following the end of the calendar quarter, on forms provided by the Director.
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8. Notification, Reporting, and Recordkeeping (Continued)

(5) Per 567 IAC 25.1(7), a written compliance demonstration report for each compliance testing event, 

whether successful or not, postmarked not later than six (6) weeks after the completion of the test 

period unless other regulations provide for other notification requirements. In that case, the more 

stringent reporting requirement shall be met;

C. All data, records, reports, documentation, construction plans, and calculations required under this permit 

shall be available at the plant during normal business hours for inspection and copying by federal, state, or 

local air pollution regulatory agencies and their authorized representatives, for a minimum of two (2) years 

from the date of recording unless otherwise required by another applicable law (i.e. NSPS, NESHAP, etc.)

D. The owner or operator shall send correspondence regarding this permit to the following address:

Construction Permit Supervisor

Air Quality Bureau

Iowa Department of Natural Resources

7900 Hickman Road, Suite 1

Windsor Heights, IA 50324

Telephone: (515) 725-9549

Fax: (515) 725-9501

E. The owner or operator shall send correspondence concerning stack testing to:

Stack Testing Coordinator

Air Quality Bureau

Iowa Department of Natural Resources

7900 Hickman Road, Suite 1

Windsor Heights, IA 50324

Telephone: (515) 725-9545

Fax: (515) 725-9502

F. The owner or operator shall send reports and notifications to:

Compliance Unit Supervisor

Air Quality Bureau

Iowa Department of Natural Resources

7900 Hickman Road, Suite 1

Windsor Heights, IA 50324

Telephone: (515) 725-9550

Fax: (515) 725-9502

Iowa DNR Field Office 6

1023 West Madison

Washington, IA 52353

Telephone: (319) 653-2135

Fax: (319) 653-2856

9. Appeal Rights

All conditions within an original permit may be appealed, subject to the appeal rights set forth in 561 IAC Chapter 

7. Amended conditions within a permit amendment may be appealed, subject to the appeal rights set forth in 561 

IAC Chapter 7. In permit amendments, all provisions of the original permit remain in full force and effect unless 

they are specifically changed by the permit amendment. The previous, unchanged permit provisions are included in 

the amendment for your convenience only and are unappealable.

Per 561 IAC 7.4(1), the owner or operator shall file any written notice of appeal within thirty (30) days of receipt of 

the issued permit. The written notice of appeal shall be filed with the Director of the Department with a copy to the 

Legal Services Bureau Chief at the following addresses:

Director

Iowa Department of Natural Resources

502 East 9th Street

Des Moines, IA 50319

Bureau Chief

Legal Services Bureau

Iowa Department of Natural Resources

502 East 9th Street

Des Moines, IA 50319
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10. Emission Limits

The following emission limits shall not be exceeded: 

Pollutant lb/hr1tons/yr2 Additional 

Limits

Reference

(567 IAC)

Particulate Matter (PM) – Federal NA NA NA NA

Particulate Matter (PM) – State 1.24 0.80 0.01 gr/dscf Requested limits

PM10 1.2430.80 NA NAAQS

PM2.5 0.0364 NA NA NAAQS

Opacity NA NA 20%523.1(2)”v”5

Sulfur Dioxide (SO2) NA NA NA NA

Nitrogen Oxides (NOx) NA NA NA NA

Volatile Organic Compounds (VOC) NA NA NA NA

Carbon Monoxide (CO) NA NA NA NA

Lead (Pb) NA NA NA NA

Carbon Dioxide equivalents (CO2e) NA NA NA NA

(Single HAP) NA NA NA NA

(Total HAP) NA NA NA NA

1 The emission limit is expressed as the average of three (3) runs.

2 The emission limit is a twelve (12) month rolling total.

3 The limit for PM10 emissions is established for air dispersion modeling.

4The limit for PM2.5 emissions is established to address the “Finding of Substantial Inadequacy of Implementation Plan; Call 

for Iowa SIP Revision” for PM2.5 published in the Federal Register (76 FR 9706) on February 22, 2011.

5 NSPS Subpart Y. The emission limit is a six (6) minute average.

11. Emission Point Characteristics

This emission point shall conform to the specifications listed below:

Parameter Value

Stack Height, (ft, from the ground) 25.6 Ft.

Discharge Style Horizontal 1

Stack Opening (inches) 384 inches x 384 inches

Exhaust Temperature (F) Ambient

Exhaust Flowrate (scfm) 32,661 scfm

1 The baghouse vents inside a building. For dispersion modeling, emissions are assumed to be discharged from the building in a horizontal 

manner. 

The temperature and flowrate are intended to be representative and characteristic of the design of the permitted 

emission point. The Department recognizes that the temperature and flow rate may vary with changes in the process 

and ambient conditions. If it is determined that either the temperature or flowrate above are different than the values 

stated, the owner or operator shall submit a request to the Department within thirty (30) days of the discovery to 

determine if a permit amendment is required or submit a permit application requesting to amend the permit.

This emission point, EP22, along with its control equipment, is connected to the following emissions units: 

Emission Unit Description Maximum Capacity

Rail Hoppers A, B & C (EU20) 1400 tons/hr

Feeder Belt-A (EU21) 700 tons/hr
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12. Compliance Demonstration(s) 

Pollutant Compliance 

Demonstration

Compliance Methodology Frequency

PM – Federal No NA NA

PM – State No NA NA

PM10 No NA NA

PM2.5 No NA NA

Opacity No NA NA

SO2 No NA NA

NOx No NA NA

VOC No NA NA

CO No NA NA

Pb No NA NA

CO2 No NA NA

CH4 No NA NA

N2O No NA NA

CO2e No NA NA

HAP No NA NA

If an initial compliance demonstration specified above is testing, the owner or the owner’s authorized agent shall 

verify compliance with the emission limitations contained in Permit Condition 10 within sixty (60) days after 

achieving maximum production rate and no later than one hundred eighty (180) days after the initial startup date of 

the proposed equipment. 

If subsequent testing is specified above, the owner or the owner’s authorized agent shall verify compliance with 

the emission limitations contained in Permit Condition 10 according to the frequency and timeframe noted above.

If testing is required, the owner or the owner’s authorized agent shall use the test method and run time listed in the 

table below unless another testing methodology is approved by the Department prior to testing.

Pollutant Test Run Time Test Method

PM – Federal 1 hour 40 CFR 60, Appendix A, Method 5

PM – State 1 hour 40 CFR 60, Appendix A, Method 5 

40 CFR 51 Appendix M Method 202

PM10 1 hour 40 CFR 51, Appendix M, 201A with 202

PM2.5 1 hour 40 CFR 51, Appendix M, 201A with 202

Opacity 1 hour 40 CFR 60, Appendix A, Method 9

SO2 1 hour 40 CFR 60, Appendix A, Method 6C

NOx 1 hour 40 CFR 60, Appendix A, Method 7E

VOC 1 hour 40 CFR 60, Appendix A, Method 25A

CO 1 hour 40 CFR 60, Appendix A, Method 10

Pb 1 hour 40 CFR 60, Appendix A, Method 12

CO2 1 hour 40 CFR 60, Appendix A, Method 3

CH4 1 hour 40 CFR 60, Appendix A, Method 18

N2O 1 hour 40 CFR 60, Appendix A, Method 320

HAP 1 hour 40 CFR 60, Appendix A, Method 18

Each emissions compliance test must be approved by the Department. Unless otherwise specified by the 

Department, each test shall consist of three (3) separate runs. The arithmetic mean of three (3) acceptable test runs

shall apply for compliance, unless otherwise indicated by the Department. 
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12. Compliance Demonstration(s) (Continued)

Per 567 IAC 25.1(7)”a”, at the Department’s request, a pretest meeting shall be held not later than fifteen (15) days 

before the owner or operator conducts the compliance demonstration. A testing protocol shall be submitted to the 

Department no later than fifteen (15) days before the owner or operator conducts the compliance demonstration. 

Representatives from the Department shall attend this meeting, along with the owner and the testing firm, if any. It 

shall be the responsibility of the owner to coordinate and schedule the pretest meeting. A representative of the 

Department shall be allowed to witness the test(s). The Department shall reserve the right to impose additional, 

different, or more detailed testing requirements.

The owner shall be responsible for the installation and maintenance of test ports. The unit(s) being sampled shall be 

operated in a normal manner at its maximum continuous output as rated by the equipment manufacturer, or the rate 

specified by the owner as the maximum production rate at which this unit(s) will be operated. In cases where 

compliance is to be demonstrated at less than the maximum continuous output as rated by the manufacturer, and it is 

the owner's intent to limit the capacity to that rating, the owner may submit evidence to the Department that this 

unit(s) has been physically altered so that capacity cannot be exceeded, or the Department may require additional 

testing, continuous monitoring, reports of operating levels, or any other information deemed necessary by the 

Department to determine whether this unit(s) is in compliance.

13. New Source Performance Standards (NSPS) and 

National Emission Standards for Hazardous Air Pollutants (NESHAP) Applicability

These emission units are subject to the requirements of 40 CFR Part 60, Subpart Y, “Standards of Performance for 

Coal Preparation Plants.” (IAC 23.1(2)”v”) and General Provisions, Subpart A. 

These emission units are not subject to a National Emission Standards for Hazardous Air Pollutants 

(NESHAP) as there are no subparts for this source category.

14. Operating Limits

Operating limits for this emission unit shall be:

A. This emissions unit shall not operate more than 1295 hours in any rolling twelve-month period. 

B. The differential pressure drop across the baghouse shall be maintained between 2 and 10 inches water 

column while the equipment is in operation.

C. The owner or operator shall develop and maintain an operating and maintenance plan for the baghouse, 

including a preventative maintenance schedule that is consistent with the manufacturer's instructions for 

routine and long-term maintenance.

15. Operating Condition Monitoring and Recordkeeping

Unless specified by a federal regulation, all records as required by this permit shall be kept on-site for a minimum of 

two (2) years and shall be available for inspection by the Department. Records shall be legible and maintained in an 

orderly manner. These records shall show the following:

A. The owner or operator shall maintain the following monthly records: 

i. the number of hours that the emissions unit operated; and

ii. the rolling twelve-month total number of hours that the emissions unit operated. 

B. The owner or operator shall properly operate and maintain equipment to periodically monitor the 

differential pressure drop across the baghouse. The monitoring devices and any recorders shall be installed, 

calibrated, operated and maintained in accordance with the manufacturer’s recommendations, instructions 

and operating manuals or per written facility specific operation and maintenance plan.
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C. The owner or operator shall collect and record the pressure drop across the baghouse, in inches of water, at 

least once per day. This requirement shall not apply on the days that the equipment is not in operation.

D. The owner or operator shall maintain a record of all inspections and maintenance and any action resulting 

from the inspection and maintenance of the baghouse.

16. Continuous Emission Monitoring

Continuous emission monitoring is not required by this permit at this time.

17. Permit History

Permit No. Proj. No. Description Date Stack 

Testing

93-A-289 93-044 Original Permit 7/28/93 Yes

93-A-289-S1 95-156 Limit hours of operation based on testing 7/15/95 No

93-A-289-S2 06-015 Replace Dust Suppression System 2/2/06 Yes

93-A-289-S3 12-290 Add PM2.5 emission limit 07/22/13 No

18. Description of Terms and Acronyms

The descriptions below are meant only as a brief explanation of terms contained within the permit and may not be 

the exact definition of the term or acronym as contained within the regulations.

acfm Actual cubic feet per minute

Applicant The owner, company official or authorized agent

Btu British thermal unit

C Degrees Celsius

Condensable PM Material that condenses and/or reacts upon cooling and dilution in the ambient air to form 

particulate matter immediately after discharge from the stack

CO2e Carbon dioxide equivalent which is the aggregate emissions of greenhouse gas (GHG)

emissions based on global warming potentials

Department Iowa Department of Natural Resources

dia. Diameter

F Degrees Fahrenheit

ft Foot

GHG Greenhouse Gas which is defined as being the group of carbon dioxide (CO2), methane 

(CH4), nitrous oxide (N2O), hydrofluorocarbons (HFC), perfluorocarbons (PFC) and 

sulfur hexafluoride (SF6)

g grams

g/dscm Grams per dry standard cubic meter

gr Grains

gr/dscf Grains per dry standard cubic foot

gr/scf Grains per standard cubic foot

HAP Hazardous Air Pollutant(s)

hp horsepower

hr Hour

lb Pound

lb/hr Pounds per hour

m Meter

mg Milligram
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MM Million

MW Megawatt

NA Not Applicable

PM2.5 Particulate Matter with an aerodynamic diameter equal to or less than 2.5 microns

PM10 Particulate Matter with an aerodynamic diameter equal to or less than 10 microns

PM – Federal Particulate Matter that does not include the condensable PM

PM – State Particulate Matter that includes condensable PM

ppm parts per million

ppmv parts per million by volume

ppmw parts per million by weight

scfm Standard cubic feet per minute

SHAP Single hazardous air pollutant

THAP Total hazardous air pollutants

tons/yr Tons per year

yr Year

END OF PERMIT
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Muscatine, Iowa 93-A-288-S4

hr Hour

lb Pound

lb/hr Pounds per hour

m Meter

mg Milligram

MM Million

MW Megawatt

NA Not Applicable

PM2.5 Particulate Matter with an aerodynamic diameter equal to or less than 2.5 microns

PM10 Particulate Matter with an aerodynamic diameter equal to or less than 10 microns

PM – Federal Particulate Matter that does not include the condensable PM

PM – State Particulate Matter that includes condensable PM

ppm parts per million

ppmv parts per million by volume

ppmw parts per million by weight

scfm Standard cubic feet per minute

SHAP Single hazardous air pollutant

THAP Total hazardous air pollutants

tons/yr Tons per year

yr Year

END OF PERMIT