D.C. Mun. Regs. tit. 15, § 3002
3002.1 Proof of service, stating the name and address of the person on whom service is made and the manner and date of service, may be shown by any of the following methods:
3002.2 Documents required or permitted to be filed under this chapter shall be served on the same date the document is filed with the Office.
SOURCE: Final Rulemaking published at 35 DCR 7175, 7177 (September 30, 1988).