§ 370.10 Who must comply with the hazardous chemical reporting requirements of this part?
(a) You must comply with the reporting requirements of this part if the Occupational Safety and Health Administration's (OSHA) Hazard Communication Standard (HCS) require your facility to prepare or have available a Material Safety Data Sheet (MSDS) (or Safety Data Sheet (SDS)) for a hazardous chemical and if either of the following conditions is met:
(1) A hazardous chemical that is an Extremely Hazardous Substance (EHS) is present at your facility at any one time in an amount equal to or greater than 500 pounds (227 kg—approximately 55 gallons) or the Threshold Planning Quantity (TPQ), whichever is lower. EHSs and their TPQs are listed in Appendices A and B of 40 CFR part 355.