In Sarnia/Corunna, the Nova Chemical facility is incorrectly shown at the location of Shell refinery, and the Shell refinery is shown in the wrong location. The Nova Chemical facility is primarily a chemical plant and not a refinery. It does produce some refinery-type products "on the side." Nova's correct location is at
4252'54.40"N, 8224'21.36"W
for those who want to consider it a "refinery."
Also, the "Sunoco" Sarnia refinery is actually now Suncor, and the location should be moved to the south (across the street from current location). I'm not entirely sure, but I think the current location is actually part of the larger Imperial Oil complex.