That would be fine. Most cities have Standard Details that show concrete pads around dumpster enclosures, due to the heavy weight of the Trash Trucks
What city and state are you near? I should be able to get you a real life detail.
See the link below to Sacramento County street standards:
Look at Section 4-7 starting on sheet 4-16
This gives general pavement Structural Sections for your area.
Let me know if you have any questions