Refineries have cleaned up. 30 years ago the area 10 miles around stunk. They figured the EPA fines were a cost of business. However they have changed, and have cleaned up so that they never pay fines.
The above is about a specific refinery I know of. There are more than 100 in the US with different management.
The above is about a specific refinery I know of. There are more than 100 in the US with different management.