Wis. Stat. § 289.07: Department powers.

The department may:

(1) Hold hearings relating to any aspect of the administration of this chapter and ss. 292.31 and 292.35 and, in connection therewith, compel the attendance of witnesses and the production of evidence.

(2) Secure necessary scientific, technical, administrative and operational services, including laboratory facilities, by contract or otherwise.

(3) Advise, consult, contract and cooperate with other agencies of the state, local governments, industries, other states, interstate or interlocal agencies, and the federal government, and with interested persons or groups.

(4) Conduct or direct scientific experiments, investigations, demonstration grants and research on any matter relating to solid waste disposal, including, but not limited to, land fill, disposal and utilization of junked vehicles, and production of compost.