West  of  Lake  Ontario  refined  petroleum  products  mostly  come  from  Canadian  crude  that  is  refined  in  Canada.

With  regards  to  new  refineries  there  is  a  specialized  one  nearing  completion  just  east  of  Edmonton  that  will  use  bitumen  and  natural  gas  as  its  feedstocks  and  produce  diesel  and  similar  products.  Most  of  the  process  CO2  will  be  captured  and  used  for  enhanced  oil  recovery.

The  main  question  is  whether  any  of  this  can  be  done  economically.