D.C. Mun. Regs. tit. 29, § 1629
1629.1 When one or more individuals have been named as the possible birth father, the child-placing agency shall notify all named individuals of the plan for adoption by certified or registered mail return receipt requested.
1629.2 The child-placing agency shall report to the court a birth parent's failure to respond to a notice of a plan for adoption, if the birth parent fails to respond within thirty (30) days of receipt of notification.
SOURCE: Final Rulemaking published at 37 DCR 3033, 3058 (May 11, 1990).