(b) Designation of an area less than an entire State as a quarantined area. Less than an entire State will be designated as a quarantined area only if the Administrator determines that:
- (1) The State has adopted and is enforcing restrictions on the intrastate movement of the regulated articles that are equivalent to those imposed by this subpart on the interstate movement of regulated articles; and
- (2) The designation of less than the entire State as a quarantined area will prevent the interstate spread of the fruit fly.