This is an online version of the 2008 Emergency Response Guidebook (ERG) which is produced by the USDOT for first responders during the initial phase of a Dangerous goods/Hazardous Materials incident. Have you ever wondered what those four digit numbers on the placards on the side of trucks and rail cars mean? Our online ERG will give you your answer.
| Isolation and Protective Action Distances Table | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SMALL SPILLS | LARGE SPILLS | ||||||||||||
| UN# | Name of Material | First ISOLATE in all Directions | Then PROTECT Persons Downwind During- | First ISOLATE in all Directions | Then PROTECT Persons Downwind During- | ||||||||
| Day | Night | Day | Night | ||||||||||
| m | ft | km | mi | km | mi | m | ft | km | mi | km | mi | ||
Please see: How to use the table of initial isolation and protective action distances Current as of: Oct. 2, 2011 | |||||||||||||
| 2985 | Chlorosilanes, flammable, corrosive, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 100 | 300 | 0.5 | 0.3 | 1.6 | 1 |
| 2985 | Chlorosilanes, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 100 | 300 | 0.5 | 0.3 | 1.6 | 1 |
| 2986 | Chlorosilanes, corrosive, flammable, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 100 | 300 | 0.5 | 0.3 | 1.6 | 1 |
| 2986 | Chlorosilanes, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 100 | 300 | 0.5 | 0.3 | 1.6 | 1 |
| 2987 | Chlorosilanes, corrosive, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 100 | 300 | 0.5 | 0.3 | 1.6 | 1 |
| 2987 | Chlorosilanes, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 100 | 300 | 0.5 | 0.3 | 1.6 | 1 |
| 2988 | Chlorosilanes, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 100 | 300 | 0.5 | 0.3 | 1.6 | 1 |
| 2988 | Chlorosilanes, water-reactive, flammable, corrosive, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 100 | 300 | 0.5 | 0.3 | 1.6 | 1 |
| 3023 | 2-Methyl-2-heptanethiol | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.5 | 0.3 | 0.7 | 0.5 |
| 3023 | tert-Octyl mercaptan | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.5 | 0.3 | 0.7 | 0.5 |
| 3048 | Aluminum phosphide pesticide | 60 | 200 | 0.5 | 0.3 | 1.9 | 1.2 | 600 | 2000 | 5.8 | 3.6 | 11+ | 7+ |
| 3049 | Metal alkyl halides, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.4 | 0.3 | 1.3 | 0.8 |
| 3049 | Metal alkyl halides, water-reactive, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.4 | 0.3 | 1.3 | 0.8 |
| 3049 | Metal aryl halides, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.4 | 0.3 | 1.3 | 0.8 |
| 3049 | Metal aryl halides, water-reactive, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.4 | 0.3 | 1.3 | 0.8 |
| 3052 | Aluminum alkyl halides | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.4 | 0.3 | 1.3 | 0.8 |
| 3052 | Aluminum alkyl halides, liquid | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.4 | 0.3 | 1.3 | 0.8 |
| 3052 | Aluminum alkyl halides, solid | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.4 | 0.3 | 1.3 | 0.8 |
| 3057 | Trifluoroacetyl chloride | 30 | 100 | 0.2 | 0.2 | 1 | 0.7 | 800 | 2500 | 4.6 | 2.9 | 11+ | 7+ |
| 3079 | Methacrylonitrile, stabilized | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.5 | 0.3 | 0.9 | 0.5 |
| 3083 | Perchloryl fluoride | 30 | 100 | 0.2 | 0.1 | 0.7 | 0.4 | 500 | 1500 | 3.1 | 2 | 8.4 | 5.2 |
| 3122 | Poisonous liquid, oxidizing, n.o.s. | 60 | 200 | 0.8 | 0.5 | 1.8 | 1.1 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 3122 | Poisonous liquid, oxidizing, n.o.s. | 60 | 200 | 0.8 | 0.5 | 1.8 | 1.1 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 3122 | Poisonous liquid, oxidizing, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.3 | 0.2 | 60 | 200 | 0.6 | 0.4 | 1 | 0.6 |
| 3122 | Toxic liquid, oxidizing, n.o.s. | 60 | 200 | 0.8 | 0.5 | 1.8 | 1.1 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 3122 | Toxic liquid, oxidizing, n.o.s. | 60 | 200 | 0.8 | 0.5 | 1.8 | 1.1 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 3122 | Toxic liquid, oxidizing, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.3 | 0.2 | 60 | 200 | 0.6 | 0.4 | 1 | 0.6 |
| 3123 | Poisonous liquid, water-reactive, n.o.s. | 60 | 200 | 0.8 | 0.5 | 1.8 | 1.1 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 3123 | Poisonous liquid, water-reactive, n.o.s. | 60 | 200 | 0.8 | 0.5 | 1.8 | 1.1 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 3123 | Poisonous liquid, water-reactive, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.5 | 0.3 | 0.8 | 0.5 |
| 3123 | Poisonous liquid, which in contact with water emits flammable gases, n.o.s. | 60 | 200 | 0.8 | 0.5 | 1.8 | 1.1 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 3123 | Poisonous liquid, which in contact with water emits flammable gases, n.o.s. | 60 | 200 | 0.8 | 0.5 | 1.8 | 1.1 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 3123 | Poisonous liquid, which in contact with water emits flammable gases, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.5 | 0.3 | 0.8 | 0.5 |
| 3123 | Toxic liquid, water-reactive, n.o.s. | 60 | 200 | 0.8 | 0.5 | 1.8 | 1.1 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 3123 | Toxic liquid, water-reactive, n.o.s. | 60 | 200 | 0.8 | 0.5 | 1.8 | 1.1 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 3123 | Toxic liquid, water-reactive, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.5 | 0.3 | 0.8 | 0.5 |
| 3123 | Toxic liquid, which in contact with water emits flammable gases, n.o.s. | 60 | 200 | 0.8 | 0.5 | 1.8 | 1.1 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 3123 | Toxic liquid, which in contact with water emits flammable gases, n.o.s. | 60 | 200 | 0.8 | 0.5 | 1.8 | 1.1 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 3123 | Toxic liquid, which in contact with water emits flammable gases, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.5 | 0.3 | 0.8 | 0.5 |
| 3160 | Liquefied gas, poisonous, flammable, n.o.s. | 100 | 300 | 0.6 | 0.4 | 2.5 | 1.5 | 800 | 2500 | 4.4 | 2.7 | 8.9 | 5.6 |
| 3160 | Liquefied gas, poisonous, flammable, n.o.s. | 100 | 300 | 0.6 | 0.4 | 2.5 | 1.5 | 800 | 2500 | 4.4 | 2.7 | 8.9 | 5.6 |
| 3160 | Liquefied gas, poisonous, flammable, n.o.s. | 30 | 100 | 0.2 | 0.1 | 0.8 | 0.5 | 400 | 1250 | 1.9 | 1.2 | 4.8 | 3 |
| 3160 | Liquefied gas, poisonous, flammable, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.3 | 0.2 | 300 | 1000 | 1.3 | 0.8 | 4.1 | 2.6 |
| 3160 | Liquefied gas, poisonous, flammable, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 150 | 500 | 0.7 | 0.5 | 2.7 | 1.7 |
| 3160 | Liquefied gas, toxic, flammable, n.o.s. | 100 | 300 | 0.6 | 0.4 | 2.5 | 1.5 | 800 | 2500 | 4.4 | 2.7 | 8.9 | 5.6 |
| 3160 | Liquefied gas, toxic, flammable, n.o.s. | 100 | 300 | 0.6 | 0.4 | 2.5 | 1.5 | 800 | 2500 | 4.4 | 2.7 | 8.9 | 5.6 |
| 3160 | Liquefied gas, toxic, flammable, n.o.s. | 30 | 100 | 0.2 | 0.1 | 0.8 | 0.5 | 400 | 1250 | 1.9 | 1.2 | 4.8 | 3 |
| 3160 | Liquefied gas, toxic, flammable, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.3 | 0.2 | 300 | 1000 | 1.3 | 0.8 | 4.1 | 2.6 |
| 3160 | Liquefied gas, toxic, flammable, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 150 | 500 | 0.7 | 0.5 | 2.7 | 1.7 |
| 3162 | Liquefied gas, poisonous, n.o.s. | 100 | 300 | 0.5 | 0.3 | 2.1 | 1.3 | 800 | 2500 | 4.4 | 2.7 | 8.9 | 5.6 |
| 3162 | Liquefied gas, poisonous, n.o.s. | 100 | 300 | 0.5 | 0.3 | 2.1 | 1.3 | 800 | 2500 | 4.4 | 2.7 | 8.9 | 5.6 |
| 3162 | Liquefied gas, poisonous, n.o.s. | 30 | 100 | 0.2 | 0.1 | 0.8 | 0.5 | 400 | 1250 | 1.9 | 1.2 | 4.8 | 3 |
| 3162 | Liquefied gas, poisonous, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.4 | 0.2 | 200 | 600 | 1 | 0.6 | 3.2 | 2 |
| 3162 | Liquefied gas, poisonous, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 150 | 500 | 0.7 | 0.5 | 2.7 | 1.7 |
| 3162 | Liquefied gas, toxic, n.o.s. | 100 | 300 | 0.5 | 0.3 | 2.1 | 1.3 | 800 | 2500 | 4.4 | 2.7 | 8.9 | 5.6 |
| 3162 | Liquefied gas, toxic, n.o.s. | 100 | 300 | 0.5 | 0.3 | 2.1 | 1.3 | 800 | 2500 | 4.4 | 2.7 | 8.9 | 5.6 |
| 3162 | Liquefied gas, toxic, n.o.s. | 30 | 100 | 0.2 | 0.1 | 0.8 | 0.5 | 400 | 1250 | 1.9 | 1.2 | 4.8 | 3 |
| 3162 | Liquefied gas, toxic, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.4 | 0.2 | 200 | 600 | 1 | 0.6 | 3.2 | 2 |
| 3162 | Liquefied gas, toxic, n.o.s. | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 150 | 500 | 0.7 | 0.5 | 2.7 | 1.7 |
This information was compiled from the 2008 Emergency Response Guidebook (2008 ERG) which is produced by the U.S. Department of Transportation.
(Data last updated/verified: Oct. 2, 2011)
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