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Applying for an Air Pollution Control Permit

Additional PTI/PTIO Application Guidance

Prior to the installation of any new air contaminant emissions unit or the modification of an emissions unit, a Permit-to-Install (PTI) or Permit-to-Install and Operate (PTIO) must be applied for and issued as directed by Ohio Administrative Code (OAC) rule 3745-31-05. PTIs are issued to Title V facilities while PTIOs are issued to non-Title V facilities. The Ohio EPA defines a new emissions unit as any unit where the construction or modification commenced on or after Jan. 1, 1974. Only after the PTI or PTIO is issued may a facility begin installation and/or construction of the emissions unit. A period of 18 months from the date of issuance is allowed for commencing construction.

You May Not Need To Submit An Application If:

The emissions unit(s) is exempt from a PTI or PTIO requirement by any of the three provisions below:

1. An exemption for that type or size of emission unit is listed in OAC rule 3745-31-03.

2. The emissions unit(s) is a de minimis source per OAC rule 3745-15-05 that

  • At maximum design operating conditions, could emit 10 pounds or less of any criteria pollutant per 24-hour period, without the use of air emission control equipment, AND
  • At maximum design operating conditions, could emit less than 1 ton per year of any hazardous air pollutants (HAPs), as listed in Section 112b of the federal Clean Air Act.

3. The emssion unit(s) for one of the Permit-By-Rule provisions listed in OAC rule 3745-31-03 (A)(4).

For additional information about these exemptions, see the Air Permit Exemptions fact sheet.

If a PTI/PTIO Application is Needed: Effective June 30, 2008, Ohio EPA developed a new form applicable to both a PTI or PTIO applications. Please submit the following to your district office or local air agency.

Download Permit Applications

1. Application for PTI/PTIO Section I, EPA Form 3150a

Only one of these forms is needed regardless of the number of emissions units being installed/modified. If your facility has no previous air permits, it will not have a facility ID Number. An ID Number will be assigned upon receipt. If this is the case, leave the 'Facility Information' question regarding the facility ID Number blank.

2. Application for PTI/PTIO Section II, EPA Form 3150a

Make copies of Section II for each emissions unit. Complete and submit the forms to the appropriate district office or local air agency. Additional information is needed in order to determine compliance with new regulations and/or policies.

3. Emissions Activity Category (EAC) Form(s)

A list of all of the available EAC Forms is included in the PTI/PTIO application instructions. Copies of the appropriate forms for your facility can be obtained from your district office or local air agency. Make enough copies for each emissions unit. In order to facilitate review you may wish to staple Section II of Form 3150a and the EAC FORM for the same emissions unit, together.

Additional Information That May be Helpful to You:

4. Best Available Technology

Where required, your application must demonstrate that the new emissions unit(s) will employ the best available technology (BAT) to minimize air contaminant emissions. BAT is defined as: the use of a control technology at least as effective as those used by other similar emissions units. It is determined on a case-by-case basis. You may have to complete a BAT Study to determine the appropriate control technology for the planned emissions unit(s). Engineering Guide 89 includes information to determine when such a study is required. Contact your district office or local air agency for more information on the need for a BAT study.

5. Toxic Air Contaminant Analysis

Toxic analysis may need to be performed for the emissions unit. Any compound identified in OAC rule 3745-114-01 is a toxic air contaminant. If the allowable emissions of a toxic air contaminant from an emissions unit is expected to exceed 1.0 tons per year, then computer modeling must be performed to determine the maximum ambient ground-level concentration (MAGLC). The allowable MAGLC is the TLV value divided by 42.

The required input data for each egress point has already been requested in the application forms. For simple emission scenarios at a limited number of emissions units, the district office or local air agency may perform the AERSCREEN analysis for you. Complex emission scenarios should be analyzed by a computer modeling expert. A copy of the Division of Air Pollution Controls (DAPC) Engineering Guideline #69 (PDF) can be downloaded.

6. Additional Information Resources

For facilities subject to the Title V permitting requirements, a revised Title V application will be required. In some cases, this revised Title V application may be required before you can begin operating a change authorized for installation through a PTI. In some cases, you may be required to obtain a final issued revised Title V permit before beginning operation. In other cases, you may be able to wait up to one year from the start-up date if you comply with all the requirements contained in the PTI and all applicable air pollution laws, regulations and policies. For information on Title V revisions please see the available guidance for incorporating facility changes into a Title V Permit:

Send the completed forms to your district office or local air agency.