Service on the department

Service on the department. Service on the department. All petitions for hearings, petitions for rules, petitions for declaratory rulings, petitions for review of contested case decisions under s. NR 2.20 , answers and complaints required by any statute or rule shall be served on the department by personal delivery to the office of the secretary, by mailing to the secretary by certified mail, at the following address: P. O. Box 7921, Madison, Wisconsin 53707-7921.