If a tribe has enacted tribal laws, regulations, or procedures under which a petitioner may file a petition alleging noncompliance with a TERA, the tribe must:
(a) Within a reasonable time issue a final written decision under the tribal laws, regulations, or procedures that addresses the claim. The decision may include a determination of whether the petitioner is an interested party;
(b) Provide a copy of its final written decision to the petitioner; and
(c) If the tribe fails, within a reasonable period, to issue a written decision to a petition that a petitioner brings under applicable tribal laws, regulations, or procedures the petitioner may file a petition with the Secretary.