I'd be happy to. I think the best place to start is the bill itself, where the 30 month transition is explained:
SEC. 3. DISCLOSURE OF HOLDING.
2 During the 30-month period following the date of en3
actment of this Act, the United States Government shall
4 take timely and reasonable steps to disclose all of its hold5
ings of gold, together with a contemporaneous report of
6 any United States governmental purchases or sales, thus
7 enhancing the ability of the market and of market partici8
pants to arrive at the fixed dollar-gold parity in an orderly
9 fashion.