LAW: Appeals court tosses hazardous waste exemption for refineries Ellen M. Gilmer, E&E reporter Published: Monday, June 30, 2014 Certain petroleum refinery processes will no longer avoid oversight under federal hazardous waste laws. Please subscribe to EnergyWire to read the full story. Username: Password: Forgot your access codes? Recover them. Not a subscriber? Sign up for a trial. Ready to subscribe? Click here.