The regulation itemizes the contents of the case by case and exception hold notices. It illustrates those requirements in model forms. The date the funds will be available is neither required nor is it depicted in model forms.
As a matter of personal opinion strongly held, this is the single best illustration of how a regulation and model language fail to help the consumer. The consumer doesn't know a business day from a banking day and probably isn't any more accomplished at counting them than your tellers are.
In a more user friendly world, what the consumer should actually be told is the date the funds will be available.
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In this world you must be oh so smart or oh so pleasant. Well, for years I was smart. I recommend pleasant.