In the event that the Administrator is unable, for any reason, to promulgate allocation regulations on a timely basis, Section 454 provides two default methods for compliance, both of which are implemented separately for the two zones.
The Administration's regulations are the only option.
mnli hypothesis: The Administration's regulations are the only option. premise: In the event that the Administrator is unable, for any reason, to promulgate allocation regulations on a timely basis, Section 454 provides two default methods for compliance, both of which are implemented separately for the two zones.