125.The Commissioner may investigate whether a person (referred to in this Part as “D”) has failed to comply with a relevant requirement.
126.In this Part, a “relevant requirement” means any of the following:
a duty to comply with a standard specified by the Welsh Ministers (see section 25);
a requirement included in a decision notice by virtue of section 79 (explained below);
an action plan (see sections 79 and 80, explained below);
a requirement included in a decision notice by virtue of section 82 (explained below).
127.Schedule 10 provides further details about investigations.