Note: This message is displayed if (1) your browser is not standards-compliant or (2) you have you disabled CSS. Read our Policies for more information.
An Interim Approval allows the applicant, under certain limited circumstances and at their own risk, to commence construction of a new emissions unit at an existing source or modification of an emissions unit at an existing source while the permit application is being reviewed. Interim approvals are subject to the requirements of 326 IAC 2-13-1.
Detailed information preparing an Interim Petition, and the applicable forms, are provided below. For additional information, please also refer to Frequently Asked Questions & Answers about Interim Approvals.
The interim petition is applicable to proposed modification/revision to an existing source operating under valid operating permit(s) and located in an attainment area.
Modifications/revisions ineligible for the interim petition program include:
If you have questions or would like to schedule a pre-application meeting, contact: (317)-233-3861 (all inquiries) or (317)-234-5132 (pre-application meetings). If you have inquiries that are confidential in nature, want to discuss permitting options for various scenarios, need advice that is technical in nature, or need help choosing and filling out application forms, contact IDEM's Compliance and Technical Assistance Program for free and confidential assistance: (800) 988-7901 or (317) 232-8172, or via email at firstname.lastname@example.org.