Question: Brooklyn Community Board 1 is delimited by  3.5 mi long tributary containing an estimated how many USgal of spilled oil?
Related documents: [0]  [DOC] Brooklyn Community Board 1 is a New York City community board that encompasses the Brooklyn neighborhoods of Williamsburg and Greenpoint. It is delimited by the Newtown Creek and Queens Borough line on the east, Flushing and Kent Avenue on the south, and by the East River on the west. [END] 
[1]  [DOC] Newtown Creek, a 3.5 mi long tributary of the East River, is an estuary that forms part of the border between the boroughs of Brooklyn and Queens, in New York City. Channelization made it one of the most heavily used bodies of water in the Port of New York and New Jersey and thus one of the most polluted industrial sites in the US, containing years of discarded toxins, an estimated 30000000 USgal of spilled oil, including the Greenpoint oil spill, raw sewage from New York City’s sewer system, and other accumulation from a total of 1,491 sites. [END] 
Answer: 
30000000
30000000