31 Tex. Admin. Code § 29.26
As applicable, the provisions of § 29.20 of this chapter (relating to Commissioner Review and Certification of Agency Rules and Rule Amendments) or § 29.23 of this chapter (relating to Expedited Certification of Rule and Rule Amendments) shall be applied in requesting and responding to a request for approval of thresholds. Notwithstanding any other provision of this section to the contrary, when applying § 29.20 or § 29.23 of this chapter to thresholds, the term "threshold" or "thresholds" shall be substituted for the term "rule" or "rules" and the term "approval" shall be substituted for the term "certified" or "certification." Thresholds for referral shall be set a level consistent with the standard in § 26.13(b) of this title (relating to Administrative Policies).
31 Tex. Admin. Code § 29.26