The rule shall become effective 20 days after being filed with the Secretary of State, except that an emergency rule adopted by the commission and designating an area of critical state concern shall become effective immediately on being filed. Any rule adopted pursuant to this paragraph shall be presented to the Legislature for review pursuant to paragraph (c). A statement of estimated regulatory costs prepared pursuant to s. 120.541 shall not be a ground for a challenge of the rule; however, a landowner shall not be precluded from using adverse economic results as grounds for challenge. Such principles for guiding development shall apply to any development undertaken subsequent to the legislative review pursuant to paragraph (c) of the designation of the area of critical state concern with or without modification but prior to the adoption of land development rules and regulations or a local comprehensive plan for the critical area pursuant to subsections (6) and (8). No boundaries or principles for guiding development shall be adopted without a specific finding by the commission that the boundaries or principles are consistent with the purpose of the designation. The commission is not authorized to adopt any rule that would provide for a moratorium on development in any area of critical state concern.
Fla. Stat. § 380.05