Section 58.01.01.382 - SIGNIFICANT PERMIT MODIFICATION01.Criteria. Significant modification procedures are used for applications requesting permit revisions that do not qualify as minor permit modifications or as administrative amendments. Nothing herein will be construed to preclude the permittee from making changes consistent with this chapter that would render existing permit compliance terms and conditions irrelevant. A significant permit modification is a permit revision for changes that: (3-28-23)a. Violate an existing Tier I permit term or condition derived from an applicable requirement; (3-28-23)b. Involve significant changes to existing monitoring, reporting or recordkeeping requirements in the permit. Every significant change in existing monitoring terms or conditions (except more frequent monitoring or reporting under Subsection 381.01.c.) and every relaxation of reporting or recordkeeping terms or conditions is considered significant; (3-28-23)c. Require or change a case-by-case determination of an emission limitation or other standard; a source-specific determination for temporary sources of ambient impacts; or a visibility or increment analysis; (3-28-23)d. Seek to establish or change a permit term or condition for which there is no corresponding underlying applicable requirement and that the source has assumed to avoid an applicable requirement to which the source would otherwise be subject. Such terms and conditions include, but are not limited to, an enforceable emissions cap assumed to avoid classification as a modification under any provision of Title I of the Clean Air Act or an alternative emissions limit for an early reduction of hazardous air pollutants that was approved pursuant to regulations promulgated under 42 U.S.C. Section 7412(i)(5) of the Clean Air Act; (3-28-23)e. Constitute a modification under any provision of Title I of the Clean Air Act; or (3-28-23)f. Could be processed as an administrative amendment or as a minor modification, except the permittee has requested the change be processed as a significant modification, including incorporating the requirements of a permit to construct that was issued by the Department in accordance with Subsection 209.05.a. (3-28-23)02.Significant Permit Modification Application Procedures. A permittee may initiate a significant permit modification by submitting a complete significant permit modification application to the Department. The application must: (3-28-23) a. Request the use of significant permit modification procedures and state at the beginning of the request that it is a "REQUEST FOR SIGNIFICANT PERMIT MODIFICATION"; (3-28-23)b. Meet the standard application requirements of Sections 314 and 315; (3-28-23)c. Provide a summary sheet; (3-28-23) i. Describing the proposed significant permit modification; (3-28-23)ii. Describing and quantifying any change in emissions resulting from the significant permit modification including, but not limited to, an identification of any new regulated air pollutant(s) that will be emitted; (3-28-23)iii. Identifying any Tier I operating permit term or condition that will no longer be applicable as a result of the significant permit modification; and (3-28-23)iv. Identifying new applicable requirement resulting from the change. (3-28-23)d. Significant permit modifications will be issued in accordance with all procedural requirements as they apply to Tier I operating permit issuance and renewal, including those for applications (Sections 314 and 315), public participation (Section 364), review by affected States (Sections 364 and 365), and review by EPA (Section 366). (3-28-23)e. The Department will process the majority of significant permit modifications within nine (9) months of receiving a complete application. The Department will determine which significant permit modification applications will be processed within nine (9) months. (3-28-23)03.Implementation Procedures. The permittee must comply with Sections 200 through 223 as applicable, including Subsection 209.05 governing permit to construct procedures for Tier I sources. (3-28-23)04.Permit Shield. Upon final action by the Department, the permit shield described in Section 325 will extend to significant permit modifications. (3-28-23)Idaho Admin. Code r. 58.01.01.382