D.C. Mun. Regs. tit. 25-B, § 1820
1820.1 Living or sleeping quarters located on the premises of a food processing operation, such as those provided for security personnel, shall be separated from rooms and areas used for food operations by complete partitioning and solid, self-closing doors.
1820.2 Access to any place designed, intended, or used for human habitation shall not be through a food processing operation, but shall be by means of a separate entrance.
SOURCE: Final Rulemaking published at 56 DCR 5245 (July 3, 2009).