(a) Any person or persons, firm, company or corporation engaged in drilling for, piping, transporting, using or selling natural gas shall transport or conduct the same through materials listed under appendix B of 49 C.F.R. part 192 and pressure test the pipe according to the criteria provided in subpart J of 49 C.F.R. part 192, as in effect on the effective date of this act.
(b) The provisions of subsection (a) shall not apply to any gathering lines which are exempted from 49 C.F.R. part 192.