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Appendix A to Emergency Order 28

Appendix A to Emergency Order 28

(1) Five or more tank car loads of any one or any combination of materials poisonous by inhalation as defined in 49 CFR 171.8, and including anhydrous ammonia (UN 1005) and ammonia solutions (UN 3318); or

(2) 20 rail car loads or intermodal portable tank loads of any one or any combination of materials listed in (1) above, or, any Division 2.1 flammable gas, Class 3 flammable liquid or combustible liquid, Class 1.1 or 1.2 explosive, or hazardous substance listed in 49 CFR 173.31(f)(2).

See 49 CFR 173.115 for the definition of Division 2.1 flammable gas, 173.120 for definition of Class 3 flammable liquid; and 173.50 for the definition of the various classes of explosives.