During the period which begins on
September 13, 1988, and ends 40 months after
September 13, 1988, each agency certified (including an agency certified for interim referrals pursuant to
24 CFR 115.11, unless such agency is subsequently denied recognition under
24 CFR 115.7) for the purposes of this subchapter on the day before
September 13, 1988, shall for the purposes of this subsection be considered certified under this subsection with respect to those matters for which such agency was certified on
September 13, 1988. If the Secretary determines in an individual case that an agency has not been able to meet the certification requirements within this 40-month period due to exceptional circumstances, such as the infrequency of legislative sessions in that jurisdiction, the Secretary may extend such period by not more than 8 months.