During unloading, a small Class 8 leak is heading toward a yard drain. What is the driver’s immediate environmental action, consistent with ADR equipment rules?

1. Wash the spill into the drain with a hose so the yard looks clean
2. Ignore it if the volume looks smaller than a cup
3. Use the drain seal and collecting container from the ADR kit, keep people back, and follow the written instructions
4. Cover the drain with orange plates