Following the 2010 Enbridge pipeline dilbit spill in Michigan, InsideClimate News produced a good primer on the differences between dilbit and conventional oil: (treehugger.com)
Perhaps this time it will rely less on consulting firms with strong fossil fuel industry ties, and work to produce a valid environmental impact statement that accurately depicts the severe environmental and climate impacts of tar sands expansion and the increased likelihood of dilbit spills on American land and into American waterways. (desmogblog.com)
The rules proposed by the petitioners cover pipeline safety, leak prevention and oil spill response, issues InsideClimate News has been covering closely in the wake of the million - gallon dilbit spill in Michigan's Kalamazoo River that occurred in July 2010. (insideclimatenews.org)