If a spill of Class 8 corrosive liquid occurs during unloading at a site in Ireland, what is the driver's first step to protect the environment?

1. Wash the spill down the nearest storm drain with plenty of water
2. Use the shovel and the drain seal from the ADR kit to cover nearby drains and prevent the liquid from entering the water system
3. Wait in the cab until the local county council environmental officers arrive
4. Neutralize the acid by pouring sand over the engine compartment