WASHINGTON (AP) — The federal company that investigates chemical incidents is hindered by a lack of staffing, management disputes and a backlog of investigations that threaten its capability to defend individuals and the environment, in accordance to a new report by a federal watchdog. The report by the Environmental Security Agency’s inspector common claims the U.S. Chemical Safety Board is “challenged by vacancies in mission-crucial positions and an inability to fully use the means Congress allocated” to it. Management disputes, shoddy inner assessments and reporting backlogs “are impeding the board’s capacity to complete its mission,” Inspector General Sean O’Donnell mentioned in a letter to the board’s performing head. O’Donnell’s report,…