Facilities that must report include:
1. Facilities covered under OSHA’s Hazard Communication Standard and that must prepare or have available safety data sheets (SDSs) for one or more hazardous chemicals; and
2. Facilities that meet either of the following conditions:
a) An extremely hazardous substance (EHS) is present at any one time in an amount equal to or greater than 500 pounds (approximately 55 gallons) or the threshold planning quantity (TPQ), whichever is lower.
b) A hazardous chemical that is not an EHS is present at any one time in an amount equal to or greater than the threshold level for that chemical. Threshold levels are 10,000 pounds unless the chemical is gasoline or diesel fuel at a retail gas station (higher threshold quantities apply to retail gas stations).
There is no threshold quantity if state responders, local emergency officials, or the local fire department asks you for information on any or all of your chemicals.