Tennessee Code Title 6. Cities and Towns § 6-54-1011

(1) The petition is submitted in writing to the administrative hearing officer, with copies mailed to all parties named in the notice of the hearing, at least seven (7) business days before the hearing;

(2) The petition states facts demonstrating that the petitioner's legal rights, duties, privileges, immunities or other legal interest may be determined in the proceeding or that the petitioner qualifies as an intervenor under any law; and

(3) The administrative hearing officer determines that the interests of justice and the orderly and prompt conduct of the proceedings shall not be impaired by allowing the intervention.

(1) Limiting the intervenor's participation to designated issues in which the intervenor has a particular interest demonstrated by the petition;

(2) Limiting the intervenor's participation so as to promote the orderly and prompt conduct of the proceedings; and

(3) Requiring two (2) or more intervenors to combine their participation in the proceedings.