As used in this chapter:

“Board” means the contractors license board.

“Chlorofluorocarbon” or “CFC” means any member of the family of substances containing carbon, fluorine, and chlorine, including, without limitation, those compounds known as CFC-11, CFC-12, CFC-13, CFC-14, CFC-113, CFC-114, CFC-115, CFC-116, CFC-500, CFC-502, and CFC-503, and any combination or mixture containing any of these chlorofluorocarbon compounds.

“Contractor” means any person who by oneself or through others offers to undertake, or holds oneself out as being able to undertake, or does undertake to alter, add to, subtract from, improve, enhance, or beautify any realty or construct, alter, repair, add to, subtract from, improve, move, wreck, or demolish any building, highway, road, railroad, excavation, or other structure, project, development, or improvement, or do any part thereof, including the erection of scaffolding or other structures or works in connection therewith.

“Contractor”, to the extent allowed under federal law includes a subcontractor, a specialty contractor, and any person, general engineering, general building, or specialty contractor who performs any of the activities listed in the previous paragraph directly or indirectly for the federal government.

“Department” means the department of commerce and consumer affairs.

“Director” means the director of commerce and consumer affairs.

“Hydrochlorofluorocarbon” or “HCFC” means any member of the family of substances containing hydrogen, carbon, fluorine, and chlorine, including, without limitation, those compounds known as HCFC-22 and HCFC-123 and any combination or mixture containing any of three hydrochlorofluorocarbon compounds.

“Investigator” means any person employed by the department of commerce and consumer affairs to investigate matters relating to any person who furnishes commodities or services for which a license is required from the department or any board or commission thereunder.

“Refrigerant recovery and recycling equipment” means a device used to recover and to purify CFCs from a device for later reuse.

“RME” means responsible managing employee.

“Sale” means any arrangement between two or more persons as a result of which there is, or is to be, a transfer of property for a consideration.

If any provision of this section, or the application thereof to any person, or circumstances, is held to be invalid, the invalidity shall not affect other provisions or applications of this section which can be given effect without the invalid provision or application, and to this end the provisions of this section are severable.