Tests conducted by Montana FWP biologists have found measurable levels of petroleum (polycyclic aromatic hydrocarbons) in fish downstream from the Jan 17 oil spill.
http://billingsgazette.com/lifestyle...c806c73fc.html
On a related note, Exxon/Mobile has appealed the $1 million fine for their role in the July 2011 pipeline rupture that released over 60,000 gallons of crude oil into the Yellowstone.
http://missoulian.com/news/state-and...d66a4e617.html
Regards,
Scott