| - Time—Minimize the time spent in the affected area. Evacuate the immediate area as soon as the presence of a chemical hazard is detected. Get out and stay out until the all clear signal is given.
- Distance—Maximize the distance from the contaminated materials. The further one is from the hazard, the less likely the hazard will have any effect on life and mission capability. Evacuate upwind, uphill, and upstream to a distance specified in the ERG depending upon the chemical agent present.
- Shielding—Use shielding wherever it is necessary to reduce/eliminate exposure. By placing an appropriate shield between the contaminant source and the individual (such as sheltering in place), some contamination and exposure may be completely eliminated or reduced to an acceptable level.
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