Texas Utilities Code - UTIL § 251.005. Conversion of Facility or Operator

(a) An operator of an underground facility that is exempted under this subchapter may voluntarily convert that facility to a Class A underground facility by sending written communication from a competent authority of the operator to the corporation advising of the status change.

(b) An operator of a Class B underground facility may voluntarily convert to a Class A underground facility operator by sending written communication from a competent authority of the operator to the corporation advising of the status change.