D.C. Mun. Regs. tit. 3, § 1014
1014.1 The Board shall preserve initiative and referendum petitions for one (1) year after the date of the election for which the petition qualified or attempted to qualify for placement on the ballot.
1014.2 Initiative and referendum petitions shall be destroyed following the lapse of the one (1) year period unless legal action relating to the petitions is pending.
SOURCE: Final Rulemaking published at 43 D.C. Reg. 103, 120 (January 12, 1996).