Section 58.01.01.176 - FACILITY EMISSIONS CAP01.Optional Facility Emissions Cap. An owner or operator of a facility may request a FEC to establish an enforceable facility-wide emission limitation. (3-28-23)02.Applicability. (3-28-23)a. The owner or operator of any facility, which is not a major facility as defined in Sections 204 or 205, may apply to the Department for a permit to establish a FEC. (3-28-23)b. FECs are available for new and existing facilities that are not major as defined in Section 204 or 205 or existing facilities undergoing a modification that does not make the facility a major facility as defined in Section 204 or 205. (3-28-23)c. Facilities that become major facilities as defined in Section 204 or 205 are no longer eligible for a FEC under Section 176. (3-28-23)03.Definitions. For the purposes of Sections 175 through 181, the following terms are defined as below. (3-28-23)a. Baseline actual emissions. As defined in Section 007. (3-28-23)b. Design concentration. The ambient concentration used in establishing the FEC. (3-28-23)c. Facility emissions cap (FEC). A facility-wide emission limitation expressed in tons per year, for any criteria pollutant or hazardous air pollutant established in accordance with Sections 176 through 181. A FEC is calculated using baseline actual emissions plus an operational variability component and a growth component. A FEC, which is defined in tons per year on a twelve (12) month rolling basis, must be set below major facility thresholds as defined in Sections 204 and 205. (3-28-23)d. FEC pollutant. The pollutant for which a FEC is established. (3-28-23)e. Growth component. The level of emissions requested by the applicant and approved by the Department to allow for potential future business growth or facility changes that may increase emissions above baseline actual emissions plus the operational variability component. (3-28-23)f. Operational variability component. The level of emissions up to the significant emission rate (SER) minus one (1) ton per year but no more than the facility's potential to emit (PTE). If the proposed FEC pollutant does not have a SER listed in Section 006 or has a SER less than or equal to ten (10) tons per year, the operational variability component is the level of emissions requested by the applicant and approved by the Department. The operational variability component cannot be more than the facility's PTE. (3-28-23)Idaho Admin. Code r. 58.01.01.176