When an owner or operator of a hazardous waste incineration unit becomes subject to Resource Conservation and Recovery Act permit requirements after October 12, 2005, or when an owner or operator of an existing hazardous waste incineration unit demonstrates compliance with the air emission standards and limitations in 40 Code of Federal Regulations (CFR) Part 63, Subpart EEE, the requirements of this subchapter do not apply, except those provisions the executive director determines are necessary to ensure compliance with 40 CFR §264.345(a) and 40 CFR §264.345(c), if the permittee or applicant elects to comply with 40 CFR §270.235(a)(1)(i). The executive director may apply the provisions of this subchapter, on a case-by-case basis, and require a permittee or an applicant to submit information in order to establish permit conditions under §305.50(a)(15) or (16) and §305.127(1)(B)(iii) or (4)(A) of this title (relating to Additional Requirements for an Application for a Hazardous or Industrial Solid Waste Permit and for a Post-Closure Order; and Conditions to be Determined for Individual Permits).