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The minimum amount in pounds, as listed in 40 CFR 370.20 and 40 CFR 355 Appendix A and B, of the hazardous (or extremely hazardous) substance, which, if stored at a facility, requires notification under the Emergency Planning and Community Right-to-Know Act (EPCRA) Sections 311 and 312. For an extremely hazardous substance (EHS) in a less dispersible and reactive form [when the substance is a solid that does not exist in powdered form or does not have a particle size less than 100 microns; is not handled in solution or in molten form; and does not meet the criteria for a National Fire Protection Association (NFPA) rating of 2, 3 or 4 for reactivity], the 311/312 Upper Threshold is established through 40 CFR 370.20 as the lesser of 500 pounds or the greater Threshold Planning Quantity (TPQ) listed in 40 CFR 355 Appendix A and B. For a merely hazardous substance, the 311/312 Upper Threshold Quantity is 10,000 pounds (which is equal to the 311/312 Lower Threshold Quantity). Special derivation Rules may apply for gasoline and diesel fuel, which are expressed in gallons. |