D.C. Mun. Regs. tit. 26-A, § 1316
1316.1 Grounds for Cancellation shall be:
1316.2 Except for non-payment of premium, or evidence of incendiarism, or a cause, which would have been grounds for non-acceptance of the risk at the time of inspection, or a misrepresentation of fact, thirty (30) days notice of cancellation, together with a statement of the reasons therefore, shall be sent to the insured. A statement explaining that the insured has a right of appeal shall accompany all notices.
SOURCE: Final Rulemaking published at 51 DCR 11573 (December 24, 2004).