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.