DEQ Press Releases

Driscoll, Paul

DEQ, Calumet Montana Refining, LLC, Resolves Air Quality Act Violations

HELENA — The Montana Department of Environmental Quality announced Calumet Montana Refining, LLC has resolved violations of the Clean Air Act of Montana that occurred at the Calumet Refinery in Great Falls.

Calumet routed gas to the flare to prevent Hydrogen Sulfide in the fuel gas system from exceeding the applicable standard.  According to DEQ’s Chad Anderson, that is not an acceptable reason to route gas to the flare.  The primary reason fuel gas can be routed to the flare is for emergencies.  DEQ also alleged that Calument violated their Montana Air Quality Permit several times by operating the vapor combustion unit at the truck loading rack below the established minimum operating temperature and failed to submit malfunction reports within one week after the malfunction was corrected. Calumet paid a $56,350 penalty and corrected the violations.

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