§2.19. When may the bureau extend the basic time limit? — Inbound Citations

(a) Ordinarily, the bureau has 20 workdays (including the date of receipt) to determine whether to comply with a request, but unusual circumstances may allow the bureau to take longer than 20 workdays (see § 2.19 of this subpart).

(i) If the bureau has determined that unusual circumstances apply (as the term is defined in § 2.70) and the bureau provided you a timely written notice to extend the basic time limit in accordance with § 2.19, the noncompliance is excused for an additional 10 workdays.