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Sep 25, 2012


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Larry Alheim


Montana Refining Company, Inc. Resolves Clean Air Act Violations


Helena --- The Montana Department of Environmental Quality (DEQ) has settled its administrative enforcement action against Montana Refining Company, Inc. in Great Falls for violations of the Clean Air Act of Montana.

Montana Refining’s operating permit required that a volumetric flow rate monitor be installed on the stack of the #1 and #2 boilers within 180 days of issuance of the permit. The company should have installed the monitor no later than March 10, 2010, but it was not installed until April 7, 2010.

Montana Refining’s operating permit also specifies that the company must install and use a continuous opacity monitoring system on the fluid catalytic cracking unit. The Semiannual Compliance Report, submitted by the company for July 1, 2010 to December 31, 2010, showed that the monitoring system on the cracking unit was not operating 11.8% of the time or 522 of the 4,416 total hours during the reporting period.

Larry Alheim, of DEQ’s Enforcement Division, said that to resolve the violations Montana Refining paid a $307,750 penalty.

For questions concerning the enforcement action, contact Larry Alheim at (406) 444-2411. For questions concerning Montana Air Quality Permits contact DEQ’s Air Resources Management Bureau at (406) 444-4114 or visit the DEQ website at

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