This is from our Advanced Deposit/Operations Manual. We have a 2 page lobby signage summary in this manual. You can find the manual in the BOL Store:
http://www.bankersonline.com/bankerstore/index.php?main_page=product_info&products_id=66-----------------------------------------------------------------
The Gramm-Leach-Bliley Act requires that ATM operators that impose an ATM surcharge to:
1. Post a notice on the machine that a surcharge may be imposed, and
2. Inform the consumer, either through on-screen message or paper receipt, of the amount of the surcharge before the consumer is committed to completing the transaction (Opt-out). [§205.16 – page 7375]
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So, the ATM (external) notice does not need to state the amount of the charge. The on-screen, or paper disclosure does.