(a) The initial administrative order becomes a final administrative order thirty (30) days after service of the order, unless the respondent files with the Clerk within thirty (30) days after service of the order, a response to the initial order and requests a hearing.

(b) The response to the initial order and request for a hearing must be in writing and mailed to, or personally served on, the Clerk of the Regional office which issued the order.

(c) The response to the initial order shall specify each factual or legal determination, or relief provision in the initial order the respondent disputes and shall briefly indicate the basis upon which it disputes such determination or provision.

(d) Respondent may include with its response to the initial order and request for a hearing a statement indicating whether it believes the subpart B or subpart C hearing procedures should be employed for the requested hearing and the reason(s) therefore.