D.C. Mun. Regs. tit. 15, § 297
297.1 All tariff filings for new services provided by the Chesapeake and Potomac Telephone Company shall contain a complete cost study, including all workpapers and related data, which supports the proposed rates for the new services.
SOURCE: Final Rulemaking published at 40 DCR 1299 (February 12, 1993).