 But relying unofficially on a foreign currency has created new problems because banks in Lebanon are not obliged to accept old or torn notes, unlike in the U.S., where banks have to take notes if half the bill is identifiable. He says in Lebanon, people are having to pay an extra fee for old and worn dollar notes to be shipped to the U.S. Federal Reserve, which erodes their value. Shippers charge a transportation fee. It could cost up to $5 for $100 barrels, which would amount for 5%.