![](https://www.cbecal.org/wp-content/uploads/2016/06/JBuck_feature-Image-1-1.jpg)
Since 2013, oil corporations have intensified a push to bring more polluting fuel sources to the Bay Area and other West Coast oil-production centers, in particular hydro-fracked Bakken shale oil from the Dakotas and Montana, and the Canadian tar sands, a sticky mixture of sand, clay, and bitumen trapped deep beneath Canada’s boreal forest.