(b) The sponsor shall ensure that a written agreement for each resident placed in the home is developed and kept up to date by the service coordinator, referring agency, sponsor or the department. If the referring agency or service coordinator does not develop the service agreement in accordance with this subsection and the sponsor is unable to develop it, the sponsor shall immediately notify the certifying agency and the department that the resident is placed in the home and lacks an up-to-date service agreement. A current resident may continue in the placement for an additional 90 days until the department can arrange for or develop the service agreement. Note: If a resident does not have a service agreement, the sponsor should notify the director of the Developmental Disabilities Office, Bureau of Community Programs, Division of Community Services, P.O. Box 7851, Madison, WI 53707 (608) 266-9328.