Incidents at a petroleum refinery involved the release of contaminants into the air. An electrical issue caused a shutdown and restart of a key process. This process, used to convert petroleum, was affected for several days. As a result, intermittent flaring occurred to maintain safe operation.

The refinery released multiple air contaminant compounds during this time. Carbon monoxide and sulfur dioxide were among the substances released. Further information on the incidents is available from the Texas Commission on Environmental Quality, which released final reports on the events.