What is the critical immediate first aid action when a driver or escort suffers skin contact or eye contamination from corrosive chemicals (Class 8 acids or alkalis)?

1. Immediately flush the affected skin or eyes with large amounts of clean running water for at least 15 minutes, remove contaminated clothing while flushing, and seek emergency medical attention
2. Apply thick petroleum jelly or engine grease directly onto the burning chemical to seal it in
3. Neutralize strong battery acid in the eye by pouring concentrated ammonia water directly into the eyeball
4. Wait 24 hours to see if the chemical burns heal on their own