Sec 20-1653. Mailing of notice of cancellation or nonrenewal to insured; statement of grounds and facts on which cancellation or nonrenewal is based

All notices of cancellation or nonrenewal shall be in writing, shall be mailed to the named insured at the address shown in the policy or to the last known address of the insured and shall state, with respect to cancellation of policies in effect after the time limits specified in section 20-1652 and, in the case of nonrenewal of policies as specified in section 20-1654:

1. In the case of cancellation which specific facts constitute the grounds set forth in section 20-1652 relied upon.

2. In the case of nonrenewal the specific facts which constitute the reason the policy is not being renewed which may include, but are not limited to, the grounds set forth in section 20-1652.