The Chemical Safety and Hazard Investigation Board’s (“CSB’s”) long-awaited accidental reporting rule became effective on March 23, 2020. Under the new rule, 40 C.F.R. §§ 1604.1-1604.6, owners and operators of chemical facilities must report accidental releases that result in fatalities, substantial injury, or substantial property damage over a million dollars. This requirement includes reporting of releases that result in in-patient hospitalization, even if the hospitalization is taken as a precautionary measure.