(1) This section applies to a geothermal activity consisting of the injection into an underground reservoir of a GHG stream.
(2) It is a defence to a proceeding for an offence against section 327 for the defendant to prove the injection--
(a) was for the purpose of GHG storage injection testing or GHG stream storage as defined under the GHG storage Act; and
(b) was authorised under that Act.