A clause buried deep in the U.S.
Clean Water Act may expose BP and others to civil fines that aren't limited to any finite cap -- unlike a $75 million limit on compensation for economic damages. The Act allows the government to seek civil penalties in court for every drop of oil that spills into U.S. navigable waters.
Source:
http://www.reuters.com/article/idUSN2514399520100525?rpc=64
