Upon receipt of a report, the department shall make a prompt and thorough investigation to determine whether or not an eligible adult is facing a likelihood of serious physical harm and is in need of protective services. The department shall provide for any of the following:
(1) Identification of the eligible adult and determination that the eligible adult is eligible for services;
(2) Evaluation and diagnosis of the needs of eligible adults;
(3) Provision of social casework, counseling or referral to the appropriate local or state authority;
(4) Assistance in locating and receiving alternative living arrangements as necessary;
(5) Assistance in locating and receiving necessary protective services; or
(6) The coordination and cooperation with other state agencies and public and private agencies in exchange of information and the avoidance of duplication of services.