The case load ratio may not be greater than one case manager to ten children. The provider agency may decrease the case load ratios of the case manager set forth in §A of this regulation if it is determined that one or more of the following circumstances apply: The children's needs require more intensive supervision and training for the treatment parents; Travel distances between placements of children impede the case manager's ability to maintain frequent and direct contact with clients; The case manager provides case management services and performs the following additional duties: Recruitment and training of treatment foster parents, Casework services to a child's biological family, and Therapeutic service to a child; or Other factors necessitate the reduction of the case load to ensure adequate provision of services. A provider agency shall provide clinical supervision to casework staff.