BP and its partners, but not Lloyds of London, are also being separetely targeted by the government under the Clean Water Act, which impose fines according to how much oil was spilt. US scientists believe up to 60,000 barrels leaked into the Gulf each day, but BP claims it could be half this figure. If any gross negligence is proven, the fine could be $4,300 per barrel, or $1,100 if no negligence is found.