News Summary: Federal agencies at odds over probe

FED vs. FED: Two federal government agencies are fighting over a 2012 fire at a Chevron refinery near San Francisco that sent clouds of gas and black smoke over residential neighborhoods, resulting in 15,000 people being treated at hospitals for respiratory ailments.

CONFLICTING MISSIONS: The U.S. Chemical Safety and Hazard Investigation Board wants to keep records from 119 interviews from being used in an Environmental Protection Agency criminal investigation, saying turning them over could hamper future probes.

IN THE OTHER CORNER: The EPA wants to know if Chevron managers knew about problems at the refinery and chose not to replace aging pipes.