Oil spill volume is a limited measure of damage or impact. Smaller spills have already proven to have a great impact on ecosystems, such as the "Exxon Valdez" oil spill because of the remoteness of the site or the difficulty of an emergency environmental response. Since 2004, between 300 and 700 barrels of oil per day have been leaking from the site of an oil-production platform 12 miles off the Louisiana coast which sank in the aftermath of Hurricane Ivan. The oil spill, which officials estimate could continue throughout the 21st century, will eventually overtake the 2010 BP Deepwater Horizion disaster as
Oil spill governance in the United States are co-ordinated by the USCG. The National Oceanic and Atmospheric Administration, Office of Response and Restoration (NOAA) works closely with the USCG in providing assistance in technical areas such as Consideration of Alternatives, Oil displacement tracking and risk assessments. Different authorities are responsible for governing oil spill prevention and anticipation depending on the potential sources of the oil spills. A number of executive orders (EOs) and memoranda of understanding (MOU) have established the authorities and agencies responsible for various classes of potential oil spills (Table 1). Table.1 Federal Agency Jurisdiction for oil spill anticipation and prevention duties, by potential sources.