(a) “Human carcinogen” means any substance listed as a human carcinogen by the International Agency for Research on Cancer.
(b) “Potential human carcinogen” means one of the following:
(1) Any substance which does not meet the definition of human carcinogen, but for which there exists sufficient evidence of carcinogenicity in animals, as determined by the International Agency for Research on Cancer.
(2) Any chemical shown to be changed by the human body into a human carcinogen.