Train Station Renovation

Fastest way:

Start 14th level.
Buy segregated container and open yellow.
Collect tires, gas cylinders, chair, green crate around you and drop it to container.
Now go back to main menu, open the map, reset progress on this level and repeat until earning an achievement.

This is the last level with garbages! . You can safely skip segregating trashes by droping everything to mixed container until this level to save time.