16 Tex. Admin. Code § 1.54
Except as otherwise provided in § 1.53 of this title (relating to Deadlines for Responses to Discovery Requests), requests for admission shall be governed by the applicable provisions of the Texas Rules of Civil Procedure. Each matter for which an admission is requested shall be separately stated. If a written answer or objection to a request for admission is not timely served, the request is deemed admitted without necessity of a Commission order. The requests for admission document must clearly set forth this provision for deemed admissions, in bold print or by underlining, in a conspicuous location to fairly inform the responding party of the consequences of a failure to respond within the prescribed time period. The examiner may permit withdrawal or amendment of responses and deemed admissions upon a showing of good cause.
16 Tex. Admin. Code § 1.54