(6) DEPARTMENT REVIEW. A party may file a written request for a department review within 10 days of receiving an adverse decision from the W-2 agency or its designee or within 15 days from the date the decision was due if the parties did not receive a decision. The review shall be conducted by the department of administration's division of hearings and appeals. The department's final decision shall be issued within 30 calendar days from the date the request for departmental review was filed. Note: A request for departmental review may be mailed to the Division of Hearings and Appeals, P.O. Box 7875, Madison, WI 53707-7875; faxed to (608) 264-9885; or delivered to 4822 Madison Yards Way, Madison, WI 53705.