(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.
Official text of the Texas Utilities Code as published by the Texas Legislative Council.