A tar sands oil spill in Lake Michigan on Monday is more than double the size of original estimates, oil giant BP announced Friday amid growing anger against the company known for its massive toxic catastrophes.
The new estimates of the spill that originated at BP’s Whiting refinery in Northwest Indiana reveal up to 1,638 gallons, or 39 barrels, likely leaked. Original estimates put the spill at around nine to 18 barrels.
However, BP said its latest estimates were based on the amount of oil “collected by vacuum trucks and absorbent booms, along with an inventory of the waxy balls of oil that cleanup crews scoured from a beach on BP’s property,” the Chicago Tribune reports.
This begs the question: What about the oil BP hasn’t vacuumed up?
Tar Sands bitumen, which is processed at the plant, is very heavy compared to conventional oil and is known to sink in freshwater.
“Although some of the oil has been cleaned up, it’s unclear how much is left in the lake, a drinking water source for about seven million Chicagoans,” writes Steve Horn at the DeSmog Blog.
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