(1) To assist and protect children whose physical or mental health and welfare is substantially at risk of harm from abuse, neglect, or exploitation and who may be further threatened by the conduct of others by providing for the resolution of dependency proceedings in juvenile court;
(2) To ensure that dependency proceedings are conducted expeditiously to avoid delays in permanency plans for children;
(3) To provide the greatest protection as promptly as possible for children; and
(4) To ensure that the health, safety, and best interests of a child be the paramount concern in all dependency proceedings.