Chevron U.S.A. Inc. announced it has submitted an environmental permit application to the Mississippi Department of Environmental Quality for the construction of a major gasoline production unit, along with other minor units, at its refinery in Pascagoula, Miss., that could potentially further increase gasoline production at the refinery by roughly 15 percent. PRNewswire reports that, according to refinery General Manager Roland Kell, the new Continuous Catalyst Regeneration (CCR) unit would update important refinery technology by replacing two process units constructed more than 30 years ago. Chevron''s environmental permit application also includes several smaller projects that would optimize the refinery by increasing equipment reliability and availability. Together with the CCR, these projects could increase the refinery''s gasoline production by approximately 750,000 gallons per day. Neither the CCR project nor the smaller projects would increase the refinery''s crude oil capacity. Environmental permitting will run concurrently with Chevron''s evaluation process to ensure all information is in place when Chevron decides whether or not to move forward with the CCR and the other projects.