For the purposes of this Part, the grounds for intervention in the exercise by a local authority of its social services functions are as follows—

• GROUND 1 - the local authority has failed, or is likely to fail, to comply with a duty that is a social services function;

• GROUND 2 - the local authority has acted, or is proposing to act, unreasonably in the exercise of a social services function;

• GROUND 3 - the local authority is failing, or is likely to fail, to perform a social services function to an adequate standard.