A local official in Santa Barbara, Calif., rejected Tuesday an emergency request by Exxon XOM -0.32 % Mobil to use large trucks to haul its crude oil along a scenic highway until a pipeline that recently ruptured and caused a large spill is fixed. “There is not adequate evidence that a defined emergency exists,” said Dianne Black, the county’s assistant director of planning and development. She was enlisted to make the decision after the county’s planning director, Glenn Russell, recused himself since he recently owned stock in Exxon. Exxon was the main customer of a pipeline owned by Plains All American Pipeline PAA -0.46 % that burst three weeks ago due to corrosion, spilling 100,000 gallons of crude oil into the ocean and on beaches and killing wildlife. Exxon was using the pipeline to haul some 30,000 barrels a day of crude oil, and is being forced to scale […]