For the purpose of RCW 49.60.172 concerning the absence of HIV or hepatitis C infection as a bona fide occupational qualification only, "significant risk" means a job qualification which requires person-to-person contact likely to result in direct introduction of blood into a mucous membrane when:

(1) No adequate barrier protection is practical; and

(2) Determined only on case-by-case basis consistent with RCW 49.60.180.