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Important Notice Regarding Trinity Manufactured MC 331 Tanks

This notice is to inform you of the U.S. Department of Transportation (DOT) Special Permit (SP) 1-1-689, issued by the Pipeline and Hazardous Materials Safety Administration (PHMSA), to Trinity Industries. The SP allows the continued use in transportation of DOT specification MC 331 cargo tanks manufactured by Trinity Industries between 1996 and 2006, provided that the cargo tanks are maintained in compliance with the specific requirements of this SP.

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