Subject to § 9601.1, a certification issued pursuant to this chapter shall expire at 11:59 p.m. on October 31 of each odd- numbered year.
The Director may modify the renewal system pursuant to § 4006.3 of Chapter 40 of this title and may modify the date on which a certification expires.
D.C. Mun. Regs. tit. 17, r. 17-9602