Md. Code, Labor and Employment § 5–203

(a) To inspect excavation work for the Commissioner, the Commissioner may deputize an individual who:

(1) is employed by a county, a municipal corporation, or the Washington Suburban Sanitary Commission or other similar authority;

(2) has the approval of the chief of the unit for which the employee works; and

(3) has attended a training course that the Division of Labor and Industry conducts and, on completion of the course, has passed an examination.

(b) An individual deputized under subsection (a) of this section:

(1) may inspect excavation work only in the county, municipal corporation, or other jurisdiction of any other authority that employs the individual;

(2) has the authority of a safety inspector of the Division of Labor and Industry; and

(3) shall report to the Commissioner on each action related to an inspection under this section, on a form that the Commissioner provides.