(a) When the Department or Board determines that the established flood plain regulations meet the provision of the act, the public agency will be notified by letter.

(b) When the Department or Board determines that the established regulations do not meet the provisions of the act, the local agency shall within 180 days of receipt of notice from the Department or Board adopt new flood plain regulations and send a copy thereof to the Department or Board.

(c) If the public agency fails to adopt flood plain regulations pursuant to Sections 213 and 214 above, or if the flood plain regulations do not meet the provisions of the act and the public agency fails to adopt new flood plain regulations within 180 days of receipt of the Department's or Board's notice or fails to adopt or modify such regulations as recommended by the Department or Board within 90 days of receipt of a second notice, the Department or Board shall request the flood control agency having jurisdiction over the project to adopt flood plain regulations to meet the provisions of the act. The flood control agency must then adopt satisfactory flood plain regulations within two years of the date of the final letter (Section 213(b)) to the public agency or within 180 days after it is first empowered by Section 8414 of the act to adopt such regulations, as a condition for state financial grants for costs of lands, easements and rights-of-way.