A notice of proposed rulemaking is just that--proposed. Although many rules are adopted substantially as proposed, some are rejected and others undergo substantial change. In all cases there will be an "effective date." No rule becomes mandatory until that day.
If a new rule replaces an existing one, the old rule remains in effect until the effective date of the new one. Workable rules, however, usually contain a phase-in period. During this period you continue complying with the old rule while you are implementing the new.
Last edited by Richard Insley; 12/13/07 05:44 PM.
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...gone fishing.