United States Environmental Protection Agency

General Permit for New or Modified True Minor Sources of Air 

Pollution in Indian Country

http://www.epa.gov/air/tribal/tribalnsr.html

Instructions for Requesting Coverage under the General Air Quality Permit 

for New or Modified True Minor Source Compression Ignition Engines in 

Indian Country

Version 1.0

Last Modified: July 2, 2014

If you wish to apply for the ‘General Air Quality Permit for New or Modified True Minor Source Compression 

Ignition Engines in Indian Country,’ please complete the form “Request for Coverage under the General Air 

Quality Permit for New or Modified True Minor Source Compression Ignition Engines in Indian Country.” 

This General Air Quality Permit implements the requirements of the minor New Source Review (NSR) rule as 

described under 40 CFR part 49.

These instructions are intended to provide you with information that may be useful in completing the Request 

for Coverage forms. In the form, please provide information on all existing, new and modified units.

Helpful Definitions from the Federal Indian Country Minor NSR Rule (40 CFR 49.152) –

This is not a comprehensive list.

 Modification means any physical or operational change at a source that would cause an increase in the 

allowable emissions of the affected emissions units for any regulated NSR pollutant or that would cause 

the emission of any regulated NSR pollutant not previously emitted. [40 CFR 49.152(d)]

The following exemptions apply: 

(1) A physical or operational change does not include routine maintenance, repair, or replacement. 

(2) An increase in the hours of operation or in the production rate is not considered an operational 

change unless such increase is prohibited under any federally-enforceable permit condition or 

other permit condition that is enforceable as a practical matter.

(3) A change in ownership at a source is not considered a modification.

 Potential to emit (PTE) means the maximum capacity of a source to emit a pollutant under its physical 

and operational design. Any physical or operational limitation on the capacity of the source to emit a 

pollutant, including air pollution control equipment and restrictions on hours of operation or on the 

type or amount of material combusted, stored or processed, shall be treated as part of its design if the 

limitation or the effect it would have on emissions is enforceable as a practical matter. Secondary 

emissions, as defined at 40 CFR 52.21(b)(18) of this chapter, do not count in determining the PTE of a 

source.
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Information collected on applications includes the following:

Section 1: Contact Information

1. Business Name: Provide the complete company name. For corporations, include divisions or subsidiary 

name, if any.

2. Date: Provide the date you submit the completed application.

3. Site Address: Provide the actual address of where the source is operating or proposing to operate and 

not the mailing address. Include the state and the zip code.

4. County: Provide the county in which the source is operating or proposing to operate.

5. Name of Operator or Contact at Site: Provide the name(s) of the operator or contact at the site. 

6. Telephone Number of Operator or Contact at Site: Provide a telephone number where the operator or 

contact at the site can be reached during business hours.

7. Owner: List the full name of the owner of the business. 

8. Telephone Number of Owner: Provide a telephone number where the owner of the business can be 

reached during business hours.

9. Mailing Address of Owner: Provide the mailing address of the owner. Include the state and the zip

code.

10. Correspondence Address: Provide the mailing address of the authorized contact person. Include the 

state and the zip code.

11. Authorized Contact Person: Provide the name, title, phone number, email address, and fax number of 

the authorized contact person. The authorized contact is the person authorized to receive requests for 

data and information.

Section 2: Facility Information for Requesting Coverage under the General Air Quality 

Permit for New or Modified True Minor Source Compression Ignition Engines

12. Brief Description of Your Project: Is your facility new or a modification to an existing facility? If this is a 

new request, describe the proposed new source. If this is a modification, describe the modification 

proposed.

13. North American Industry Classification System (NAICS)/Standard Industrial Classification (SIC) Code

and Description: Provide the NAICS/SIC Code and/or a description for the facility (check all that apply):

 2211** NAICS Electric Power Generation, Transmission or Distribution

 622110 NAICS Medical and Surgical Hospitals

 Other – please specify _____NAICS; _____SIC

14. Ozone Attainment Status: Indicate if this facility is located in an ozone nonattainment area and specify 

the classification of the ozone nonattainment area. If part of a tribe’s area is designated as 
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attainment, unclassifiable, or attainment/unclassifiable and another part as nonattainment, the 

answer to this question should be based on the designation where the source would be located. If the 

source straddles the two areas, the more stringent classification applies. Information on the ozone 

attainment status of the area where your facility is located can be found at: 

http://www.epa.gov/airquality/greenbook/. Please contact your reviewing authority if you have 

questions about an area’s attainment status.

15. Exemption from the Minor NSR Program: For a new facility, calculate the PTE of all proposed emission 

units and determine if the proposed construction is below the applicability thresholds in the Indian 

Country Minor NSR program (the thresholds listed in 40 CFR 49.153). For a modification to your 

existing facility, calculate the emissions increase from your new or modified emission units and 

determine if the proposed construction or modification is below the thresholds listed. For a new 

emissions unit, the emissions change is the PTE of the new unit. For a modified emissions units, the 

emissions change is the change in allowable emissions of the unit. 

You only need to consider the thresholds for nonattainment areas if your source is (or will be) located 

in an area designated nonattainment. If in a nonattainment area, then you only need to consider the 

nonattainment threshold for the pollutant(s) for which the area is designated nonattainment. 

If the PTE of your new facility or the emissions increase at your existing facility is below the applicable 

thresholds listed for ALL pollutants, the new or modified source is exempt from the minor NSR 

program. You do not need a permit for this source. The U.S. Environmental Protection Agency (EPA) is 

providing a PTE calculator to assist with this task. The calculator is available online at:

http://www.epa.gov/air/tribal/tribalnsr.html.

Do not include mobile engines or engines that remain in one location less than 12 months in your 

calculation.

16. Qualification for General Permit – Facility in Attainment, Unclassifiable, or Attainment/Unclassifiable

Area: If located in an attainment, unclassifiable, or attainment/unclassifiable area, calculate the PTE of 

your entire facility (include new, modified, and existing units) and determine if the facility is below the 

NSR major source threshold of 250 tons per year (tpy). If the PTE of the proposed facility is equal or 

above 250 tpy for ANY pollutant, this new or modified source does not qualify for this general permit. 

The EPA is providing a PTE calculator to assist with this task. The calculator is available online at:

http://www.epa.gov/air/tribal/tribalnsr.html.

Do not include mobile engines or engines that remain in one location less than 12 months in your 

calculation.

17. Qualification for General Permit – Facility in Nonattainment Area: If located in a nonattainment area, 

calculate the PTE of your entire facility (include new, modified, and existing units) and determine if the 

facility is below the NSR major source thresholds listed. Note the NSR major source classification is 

pollutant specific. You only need to consider the nonattainment area thresholds for the particular 

pollutants for which your area is designated as nonattainment. If the PTE of the proposed facility is 

equal to or above the threshold for ANY pollutant for which the area is designated as nonattainment,

then this new or modified source does not qualify for this general permit. The EPA is providing a PTE 

calculator to assist with this task. The calculator is available online at:

http://www.epa.gov/air/tribal/tribalnsr.html. Do not include mobile engines or engines that remain in 

one location less than 12 months in your calculation.
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18. Setback Requirement: The permit contains a setback requirement and seeks information to verify 

compliance with that requirement.

Section 3: Technical Information for Requesting Coverage under the General Air Quality 

Permit for New or Modified True Minor Source Compression Ignition Engines

19. Non-Emergency Compression Ignition Engines: List each unit’s unique identification number, unit 

description, maximum capacity, fuel(s) used (diesel or biodiesel), manufactured date for each engine 

and model year. Do not include mobile engines or engines that remain in one location for less than 12 

months. Only non-emergency (prime) engines should be listed.

20. Emergency Engines: List each emergency engine’s unique identification number, unit description, 

maximum capacity, fuel(s) used, manufactured date and model year. Fuels can include: distillate fuel, 

diesel, biodiesel, natural gas, liquified petroleum gas, or gasoline. Do not include mobile engines or 

engines that remain in one location for less than 12 months. Only emergency engines should be listed.

21. Auxiliary Heaters: List each unit’s unique identification number, unit description, maximum heat input 

capacity, fuel(s) used, and construction date for each auxiliary heater (such as a hot oil heater).

Section 4: Information on Compliance with Federal Statutes Necessary for Requesting 

Coverage under a General Air Quality Permit for New or Modified True Minor Source 

Compression Ignition Engines

22. Endangered Species Act: To request coverage under this permit, sources must demonstrate that they 

have satisfied the permitting requirements related to the Endangered Species Act. The EPA is 

providing procedures with the application to assist with this task.

23. National Historic Preservation Act: To request coverage under this permit, sources must demonstrate 

that they have satisfied the permitting requirements related to the National Historic Preservation Act. 

The EPA is providing procedures with the application to assist with this task.

Section 5: Applicant’s Statement

Certify that the information supplied in the application is correct, then sign the document, print your name, 

and date the document in the spaces provided.