(1) The department shall interview all referrals to child and family services and/or their families as soon as possible following referral.

(2) At the initial interview the interviewer shall:

(a) Explain to the child and/or his family the nature and scope of available services as they relate to the child.

(b) Inform the child and/or his family of the right to confidentiality of information possessed by the department.

(c) Obtain any information necessary in determining eligibility for child and family services.