The following Title V air operating permits have been placed on public notice to receive comments prior to issuance. To view Construction or PSD permits, please go to the construction permits search page.

The following Title V operating permits have been issued. To view Construction or PSD permits, please go to the construction permits search page.

Please note the following regarding permit numbers:

##-TV-###R#-M###

• The first two digits represent the year in which the initial permit was issued.
• "TV" signifies that it is a Title V operating permit.
• "R#" is inserted into permits that have been renewed. The number after the "R" represents the number of times the permit has been renewed.
• "M###" is inserted into permits that have been modified. The number after the "M" represents the number of times the permit has been modified.

DISCLAIMER: Although every attempt is made to ensure that the information placed on this site is accurate and timely, the Department of Natural Resources cannot assure the accuracy of these renditions of printed Title V permits. You are urged to consult the official printed versions of these documents. This site cannot legally be cited as an official or authoritative source.

The following Voluntary Operating Permits (VOPs) have been placed on public notice to receive comments prior to issuance. To view Construction or PSD permits, please go to the construction permits search page.

The following Voluntary Operating Permits (VOPs) have been issued. To view Construction or PSD permits, please go to the construction permits search page.

Please note the following regarding permit numbers:

##-VOP-###R#-M###

• The first two digits represent the year in which the initial permit was issued.
• "VOP" signifies that it is a Voluntary Operating Permit.
• "R#" is inserted into permits that have been renewed. The number after the "R" represents the number of times the permit has been renewed.
• "M###" is inserted into permits that have been modified. The number after the "M" represents the number of times the permit has been modified.

DISCLAIMER: Although every attempt is made to ensure that the information placed on this site is accurate and timely, the Department of Natural Resources cannot assure the accuracy of these renditions of printed Voluntary Operating Permits. You are urged to consult the official printed versions of these documents. This site cannot legally be cited as an official or authoritative source.

Facilities which qualify for a Small Source Operating Permit are those whose potential emissions exceed the major source thresholds for Title V, but whose actual emissions are less than fifty percent of the major source thresholds for every 12-month rolling period. By registering for a Small Source Operating Permit the owner agrees to limit plant-wide actual emissions of each regulated air pollutant to below fifty percent of the major source thresholds. Facilities eligible for a Small Source Operating Permit may also qualify for reduced record keeping requirements through classification as a "de minimus" emissions source (as defined in 567 IAC 22.300(4)).

For more information regarding Small Source Operating Permits and the exceptions to eligibility, please read the operating permits' Frequently Asked Questions. To view Construction or PSD permits, please go to the construction permits page and use one of the searches under "Find Construction Permits".

Below is a list of facilities currently registered for a Small Source Operating Permit: