HOUSTON (Dow Jones)--A key gasoline-making unit at BP PLC's (BP, BP.LN) at its Texas City, Texas, refinery hit a snag Wednesday, the company reported in a filing to environmental regulators. "They are in the process of resuming normal operations" at the fluid catalytic cracking unit No. 1, the filing said. The refinery can process up to 455,790 barrels a day. -By Susan Daker, Dow Jones Newswires; (713) 547-9208; [email protected] (END) Dow Jones Newswires July 14, 2010 15:50 ET (19:50 GMT)