16 Tex. Admin. Code § 4.293
Before the expiration of a permit issued pursuant to this division, the permittee may submit an application to renew the permit. An application for renewal of an existing permit issued pursuant to this division or § RSA 3.8 of this title (relating to Water Protection) shall be submitted in writing a minimum of 60 days before the expiration date of the permit and shall include the permittee's permit number. The application shall comply with the requirements of § RSA 4.278 of this title (relating to General Permit Application Requirements for a Stationary Commercial Fluid Recycling Facility), and the notice requirements of § RSA 4.286 of this title (relating to Notice). The director may require the applicant to comply with any of the requirements of §§ RSA 4.279- RSA 4.285 of this title (relating to Minimum Engineering and Geologic Information; Minimum Siting Information; Minimum Real Property Information; Minimum Design and Construction Information; Minimum Operating Information; Minimum Monitoring Information; and Minimum Closure Information), depending on any changes made or planned to the construction, operation, monitoring, and/or closure of the facility.
16 Tex. Admin. Code § 4.293