Any such written affirmation, modification, or reversal by the Commissioner or his designee(s) pursuant to 105.9 of these rules shall be final agency action as of the date of receipt by the Contractor. In cases of binding alternative dispute resolution, the 20-day appeal period shall not begin to run until the day after the Commissioner mails written notice to the Contractor that the Commissioner has adopted the decision. In cases of non-binding alternative dispute resolution, the 20-day appeal period shall not begin to run until the day after the Commissioner mails to the Contractor written notice adopting, modifying or reversing the non-binding decision.
17-229 C.M.R. ch. 105, § 10