DEQ has developed new air quality permit application tools to make the permit application process more user-friendly and to provide DEQ the information required for a complete permit application. The tools include new application checklists and application forms.

Many of the application forms can be used for all three permit program types – Permits to Construct (PTCs), Tier I Operating Permits (TIs), and Tier II Operating Permits (TIIs).

• A Permit to Construct is required before installing or altering any equipment that emits or potentially emits an air contaminant, unless exempt under IDAPA 58.01.01.220-223. (Refer to IDAPA 58.01.01.200-228.)
• A Tier I (Title V) Operating Permit is required for any facility that emits or has the potential to emit 10 tons per year or more of any single hazardous air pollutant, 25 tons per year or more of any combination of hazardous air pollutants, or 100 tons per year or more of any regulated air pollutant. (Refer to IDAPA 58.01.01.008.10 and IDAPA 58.01.01.300-397.)
• A Tier II Operating Permit is required to limit an existing facility’s potential to emit such that the facility is not a Tier I facility. It is also is required to attain or maintain an ambient air quality standard. (Refer to IDAPA 58.01.01.400-410.)

The first step to submit an air quality permit application is to open the Directions for a Successful Submission. These directions provide application submission information and the list of available forms to use. Select and use only the forms applicable to the permitting action.

Questions? Call DEQ’s Air Quality Permit Hotline at 1-877-5Permit (573-7648).

Feedback? Please let us know what you think of the forms below by filling out our User Feedback Form.