(a) This chapter does not reduce, limit, or impair the authority provided by law to any municipality, except as provided by Subsection (b) of this section.
(b) A municipality or county may not adopt or enforce an ordinance or other regulation that establishes safety standards or practices applicable to hazardous liquid salt formation storage facilities that are subject to regulation by federal or state law.

(c) “Safety standards or practices” means any regulation of an activity or facility covered by this chapter or that is incompatible with the safety standards or practices enacted or adopted by federal or state government pursuant to 49 U.S.C. Section 60101 et seq. and its subsequent amendments or a succeeding law.