(a) The department may temporarily remove a child from a foster home based on an allegation of abuse or neglect, including sexual abuse, that occurred while the child resided in the home. If the department determines that reasonable cause exists to support the allegation, the department shall remove all foster children from the arrangement, preclude contact between the children and the foster parents, provide written notice to the multidiscplinary treatment team members and schedule an emergency team meeting to address placement options. If, after investigation, the allegation is determined to be true by the department or after a judicial proceeding a court finds the allegation to be true or if the foster parents fail to contest the allegation in writing within twenty calendar days of receiving written notice of the allegations, the department shall permanently terminate all foster care arrangements with the foster parents. If the department determines that the abuse occurred due to no act or failure to act on the part of the foster parents and that continuation of the foster care arrangement is in the best interests of the child, the department may, in its discretion, elect not to terminate the foster care arrangement or arrangements.
(b) When a child has been placed in a foster care arrangement for a period in excess of eighteen consecutive months, and the department determines that the placement is a fit and proper place for the child to reside, the foster care arrangement may not be terminated unless the termination is in the best interest of the child and:
(1) The foster care arrangement is terminated pursuant to subsection (a) of this section;