Reuters: Exxon Mobil will pay nearly $6.1 million in civil penalties for violations of a court-approved Clean Air Act agreement, the U.S. Environmental Protection Agency and Justice Department said on Wednesday. The EPA said Exxon failed to monitor the sulfur content in some fuel gas streams at four refineries, breaching a 2005 settlement between the oil company and federal regulators. Under the original agreement, Exxon was already required to pay a $7.7 million civil penalty, $6.7 …