(a) The Regional Administrator's written decision to adopt, reverse, or modify an NAO decision or revised decision pursuant to Sec. 906.17(c) is the final decision of the Department for the purposes of judicial review.
(b) If the Regional Administrator does not take action pursuant to Sec. 906.17(c)(1), NAO's decision issued pursuant to Sec. 906.15(a) or revised decision issued pursuant to Sec. 906.16(d)(2) or (e) becomes the final decision of the Department for the purposes of judicial review 30 days after service of NAO's notification under Sec. 906.17(a), or upon expiration of any stay issued by the Regional Administrator pursuant to Sec. 906.17(c)(2).
(c) The office that issued the initial administrative determination shall implement the final decision of the Department within 30 days of service of the final decision issued pursuant to Sec. 906.18(a), or within 30 days of the decision becoming final pursuant to Sec. 906.18(b), to the extent practicable.